Monday, October 21, 2024

Oakbrook Townhouses Board Meeting 20220509

Minutes of Board of Directors Meeting

May 9, 2022

Oakbrook Townhouses, Inc.

c/o Northwest Properties Agency, Inc.

9527 Bridgeport Way SW

Lakewood, WA 96499

 The regular meeting of the Board of Directors of Oakbrook Townhouses (OT) was held May 9, 2022 at 9527 Bridgeport Way SW, Lakewood, WA 98499.

 A quorum being present Board President Al Glamba called the meeting to order at 7:02 PM.

 Board members present were Rick Boulware, Al Glamba, Ken Karch, Mike McDonald (by phone), Doug Martin, and Steve Rinnan. Also in attendance was Chris Morris from Northwest Properties (NWP)

 Thanks to Karch for Service as President

 Glamba reviewed the progress of the Board during recent years and thanked Karch for his involvement and leadership during that time.

 Minutes

 Boulware moved and Martin seconded to approve September 13, 2021 meeting minutes as submitted. The motion carried

 Financial Report – April 2022

 Morris explained the layout of the Financial Report. She reported on cash on hand, insurance payments, and accounts receivable. Following discussion, it was learned that one of the serious accounts receivables had committed to become current in the next two months, but no response has been received from the other following multiple attempts.  Boulware moved and Karch seconded to ask the Association attorney to communicate with the owner at 7811 Zircon on the need to become current on monthly charges. The motion passed.

 Boulware moved and Martin seconded to approve the financial report.  The motion passed.

 McDonald reported on recent health issues and that he is expecting to return to Oakbrook later this week.  The Board wished him well.

 Status of Insurance Policy

 Karch reported on a conversation with Mike Englund of Rice Insurance that morning. Our premiums come due August 23; amounts paid for the year ending August 23, 2022 are:

Package                    $40,259.00

Business Auto                 254.00.

Umbrella                        2,172.00

Earthquake                16,450.00

                        Total               $59,135.00

 Karch reported that expectations for next year are in the range of a 10-15% increase, and that the recent fire damage event at 7617 Zircon would probably not significantly affect our rate, given our long history of good results.  He reported that there are fewer companies who wish to continue in the HOA insurance market, but that our broker reports that he is confident that at least two are likely to bid, and he will have initial estimates by next month.

 Reserve Study

 Glamba urged Oakbrook Townhouses to contract with Association Reserves for a new 3-year reserve study this year. Following discussion, Glamba and Karch agreed to meet with the company during their site visit.  Glamba will sign the engagement letter.

 Ruby Development

 Glamba reported on the new homes being built on the south side of Zircon Drive and north side of Ruby Drive, the site of the previous swimming pool and tennis courts. Comments were made about the new posted prices, the location of driveways, and traffic.

 Encampment on Chambers Creek

 Glamba reported on a visit to the area of a previous encampment along Chambers Creek slightly downstream from Oakbrook Townhouses.  He reported signs of temporary, but not permanent, activity, and signs from Pierce County warning of unsafe and environmentally sensitive conditions.

 Chambers Creek Trail Update

 Glamba reported on two recently constructed bridges over Chambers Creek and Leach Creek in the vicinity of Kobayashi Park.  These are part of the planned Chambers Creek Trail project, being developed by the Cities of University Place and Lakewood, and Pierce County.

 Rain Gutter Cleaning

 Glamba raised the issue of periodic cleaning of the gutters, including the decision by the Board several years ago to clean them on a quarterly basis.

 Driveway Replacement

 Glamba reported on his review of the condition of driveways in Oakbrook Townhouses.  On motion by Boulware and second by Karch, the Board agreed to review the desirability of additional driveway repair/replacement as part of a broader review of the Board’s goals and priorities at the next meeting.

 Future Board Meeting Locations

 The Board discussed the need to identify future Board meeting locations, including the County library system, the Oakbrook Country Club Condominiums, the Country Club, Zoom Meetings, and members’ homes.  The Board agreed to contact the Country Club for the next meeting.  McDonald offered to hold it if the Country Club was not available.

 Repair at 7511 Roof

 Glamba reported CRS had been contracted to repair damage to the roof at 7511 Zircon resulting from a wind storm, and requested approval to pay the CRS bill in the amount of $764.45. Karch moved and Boulware seconded to approve the invoice. The motion passed.

 Water Leak at 7605 Zircon

 Glamba reported on a complex issue of a water leak at 7605 Zircon. Karch moved and Boulware seconded to authorize the President to move expeditiously to secure needed leak location identification to determine responsibility.

 RV Parked Using Association Electricity

 Glamba reported on an RV parked overnight in the driveway at 7607 Zircon and apparently using association electricity.  A motion was made and seconded to issue a cease and desist order to prohibit use of association power from the street light. The motion passed, with Karch opposed, citing insufficiency.

 Use of Cluster Mailboxes by Ruby Drive Development

 Glamba reported on a request from the US Postal Service to permit homeowners in the new development along Zircon Drive to use a portion of the Oakbrook Townhouses cluster mailboxes or to permit a new cluster mailbox to be installed on Oakbrook Townhouses property. Following discussion, Boulware moved & Karch seconded that NWP respond to the USPS indicating that Oakbrook Townhouses is not interested in permitting non-Oakbrook Townhouse residents to use Oakbrook Townhouses cluster mailboxes, nor to construct, on Oakbrook Townhouses property, additional cluster mailboxes for their use, since there are reasonable alternatives. The motion carried.

 Materials Deposited On Common Area at 7711 Zircon

 Glamba described, and Karch distributed photos, of the deposit of materials in the front, side, and rear of the property at 7711 Zircon.  The Board was reminded of a similar situation several years ago at the same address.  Following discussion, Karch moved and Boulware seconded to ask the health and fire authorities to inspect the site and take appropriate actions as are necessary, and further, that we post a letter to the owner of the violations, demanding corrections within 14 days, or the association will remove and dispose of all such materials and charge the owner for the cost of such removal and disposal.  Furthermore, a posting of the association letter will be delivered in person, if possible, and posted on the door.  The motion passed.

 Member Complaint Regarding Damage to a Sign at 7631

 Glamba reported on a May 4 letter from the owner at 7631 Zircon demanding certain actions in response to alleged damage to a sign placed in the common area.  Following discussion, the Board directed NWP to respond to the letter indicating the letter has been received and will be investigated, and reminding the owner, once again, of the provisions of the CC&Rs regarding signs in the common area.

 Next Board Meeting

 Next Board Meeting is tentatively scheduled for Monday, June 13, 2022 at 7:00 PM, at the Oakbrook Golf & Country Club, or, alternatively, at 7531 Zircon Drive, location to be announced.

 Adjournment

 It was moved and seconded to adjourn the meeting. The motion passed.  The meeting was adjourned at 9:20 PM.

 

 

Respectfully submitted,

 

 

__________________________

Al Glamba, President

 


Monday, January 17, 2022

Status of Omicron Variant of COVID As of January 18 2022

 

Status of Omicron Variant of COVID

As of January 18, 2022

By Ken Karch, PE, MPH

(New material (since 1/8/22) in yellow)

 

 

The COVID-19 Omicron variant is much more transmissible than any of the earlier variants.

 

This is both good news and bad news.

 

Bad News

 

The bad news is that Omicron spreads very rapidly, giving little time to develop prevention and treatment strategies…if it were as deadly as the plague, cholera, typhoid, or smallpox (in their day) or MERS more recently, it would be a human calamity, given the ease of spread around the world.  The R value for Omicron (a measure of transmissibility) was recently about 2.5 in South Africa (the most advanced nation in terms of disease stages), as opposed to about 1 for Delta.  Of all new COVID cases, in South Africa, virtually 100% are Omicron, with Delta having shrunk to near zero. In the UK it is over 95% and in the US over 90%.  The Omicron variant has displaced the Delta variant in all three regions.

 

The R factor of about 2.5 means the rate of new recorded cases is doubling about every 2-3 days, indicating the entire population of the UK (a second exemplar) will likely be virtually totally exposed within a week, and the US during January.  It is important to remember that exposure does not equal infection. Infection will result in no clinical symptoms in most, mild symptoms in some cases, and severe enough cases to result in hospitalization in a small percentage of those infected. The latter will result in the need for ICU treatment, including intubation, oxygen, or monoclonal antibody treatment in a small fraction of those hospitalized.  

 

This is likely to lead to many, horrific, ill-founded, and contradictory actions by poorly-informed elected officials and private organizations.

 

Omicron also appears to be much more transmissible, and with more severe consequences, for young people, than did Delta, whose consequences were largely centered on older adults with immune system problems and health care workers.

 

Good News

 

The good news is that the Omicron variant is apparently much less deadly and results in much less hospitalization than any of the previous variants, including the Delta variant…perhaps by a factor of 10 (as against the Delta variant).  Normalized hospital admission and death rates are far below those for Delta, and both are much reduced from just 2 months ago. COVID hospital admissions in Washington State have risen to levels which have again created capacity concerns comparable to those experienced in the August/September, 2021 period, before declining. Recent reports indicate that “incidental” Omicron variant hospital admission rates are in the 50-65% range in New York hospitals, indicating that 50-65% of the admissions are for causes other than Omicron, with hypertension, diabetes, and obesity leading the co-morbidity list   Both hospital admissions and deaths will likely show increases, due largely to the greatly increased number of people exposed, (to Omicron) with new cases, hospitalizations, and death peaking in the late-February to mid-March, 2022 period. Treatment modalities developed for earlier COVID variants seem to work for Omicron, greatly reducing the need for hospitalization, supplemental oxygen, or intubation; and a growing body of studies is identifying alternative prevention and treatment techniques.

 

Other pieces of good news include reports that past Delta or Omicron infections and vaccinations seem to confer some degree of protection from serious complications from either, the need for hospitalization, and death; that vaccines are capable of being much more rapidly developed; and that the rapid rate of Omicron infection is likely to attain a degree of herd immunity not yet reached for Delta.

 

New News

 

Data from South Africa suggests T- and B-cell behavior is moderating the seriousness of the Omicron variant, and preventing further Delta infection. In an as yet non-peer reviewed paper released last week, antibodies developed from prior vaccinations or Delta infections do not confer immunity from the Omicron variant, allowing it to spread rapidly and out-compete, and therefore replace, the Delta variant. In another paper, a possible mechanism, through a jump from humans to mice and back again, very early in the history of COVID-19, is described.

 

Finally, the US Supreme Court on January 13 ruled in two cases involving the authority for administrative agency mandatory vaccination orders for all employers of more than 100 employees (overturned), and for health care organizations (allowed to proceed). Hearings and decisions are likely to be heard and reached on a third issue (and probably several others which have not yet reached the Supreme Court) the next few weeks or months.

 

Bottom Line

 

Cautious optimism that Omicron may out-compete and replace Delta as the dominant COVID variant in Washington State, the US, and the world, with vaccination, previous infections, and rapid attainment of herd immunity ending the COVID crisis, and reducing it to endemic proportions, such as the common cold, another COVID variant.

 

Recommendations

 

Continue social distancing, masks, and full vaccination encouragement. Increase focus on young peoples’ exposure, prevention, and treatment.  Relax non-traditional prevention and treatment protocols.

 

 

 

Monday, December 13, 2021

Status of Omicron Virus December 12 2021

 

Status of Omicron Variant of COVID

As of December 12, 2021

By Ken Karch, PE, MPH

 The COVID-19 Omicron variant is much more transmissible than any of the earlier variants

 This is both good news and bad news

 Bad News

 The bad news is that it spreads very rapidly, giving little time to develop prevention and treatment strategies…if it were as deadly as the plague, cholera, typhoid, or smallpox (in their day) or MERS more recently, it would be a human calamity, given the ease of spread around the world.  The R value is about 2.5 in South Africa (the most advanced nation in terms of disease stages), as opposed to about 1 for Delta.  Of all new COVID cases, in South Africa, over 95% are Omicron, with Delta having shrunk to less than 5%.

 The R factor of about 2.5 means the rate of new cases is doubling about every 3 days, indicating the entire population of the UK (a second exemplar) will likely be virtually totally infected within 2 weeks, and the US during January.  

 This is likely to lead to many, horrific, ill-founded, and contradictory actions by poorly-informed elected officials and private organizations.

 Omicron also appears to be much more transmissible, and with more severe consequences, for young people, than did Delta, whose consequences were largely centered on older adults with immune system problems.

 Good News

 The good news is that it apparently is much less deadly than any of these, or even of the Delta variant…perhaps by a factor of 10 (as against the Delta variant).  Normalized hospital admission and death rates are far below those for Delta, and both are much reduced from just 2 months ago, notwithstanding a recent widely reported spike in Michigan.  COVID hospital admissions in Washington State are about 10 % of capacity, where the concern level was about 20 %, with the actual data exceeding 20 % for about a month during August/September, 2021. Both hospital admissions and death will likely show modest increases, due largely to the greatly increased number of people exposed. Treatment modalities developed for earlier COVID variants seem to work for Omicron, greatly reducing the need for hospitalization or oxygen intubation; and a growing body of studies is identifying alternative prevention and treatment techniques.

 Other pieces of good news include reports that past COVID infections and vaccinations seem to confer some degree of protection from serious complications, the need for hospitalization, and death; that vaccines are capable of being much more rapidly developed; and that the rapid rate of infection is likely to attain a degree of herd immunity not yet reached for Delta. .

 Bottom Line

 Cautious optimism that Omicron may out-perform and replace Delta as the dominant COVID variant in Washington State, the USD, and the world, with vaccination, previous infections, and rapid attainment of herd immunity ending the COVID crisis, and reducing it to endemic proportions, such as the common cold, another COVID variant.

 Recommendations

 Continue social distancing, masks, and full vaccination encouragement.  Increase focus on young peoples’ exposure, prevention, and treatment.  Relax non-traditional prevention and treatment protocols.

 

Thursday, September 3, 2020

 

What We Know (And Don’t) About COVID 19

By Ken Karch, MPH

Updated September 1, 2020 Ver.9.0

(Updated material (since 7/15/2020) highlighted)

 

1.     Members of the general public may be infected by droplet spread from other individuals; there is little evidence that infection can come from animals such as pets, except through intermediate contact with other persons who are infected (an announcement several months ago of an apparent COVID-19 case in a tiger at a Bronx (NY) zoo and two house cats in New York are being investigated). There is evidence that the COVID-19 virus is a zoonosis (animal to human spread), and that the initial breakout occurred from a bat population to humans thru a wild meat market or virology lab in China.  From there it apparently found its way to other countries by person-to-person contact. There is some evidence that the virus reached the US and spread prior to the generally accepted date in early March, 2020.

2.    Droplets are those which we are told have an effective distance of no more than 6 feet; therefore, individuals are asked to maintain a social distance of 6 feet. Recent studies have suggested that the virus does not easily spread to people from surfaces.

3.    We do not know whether fine, dry particles containing the virus can survive, and become infective beyond a 6 foot distance. My MPH training indicated that the effective distance of sneeze particles is 15 feet.  Others have suggested that it may be up to 27 feet, or that the virus may be pervasive and infective throughout the general atmosphere near a carrier…this is usually called aerosolized.  There is some evidence that smaller virus particles can be transmitted through normal talking or breathing, and in particular in situations where lung air exchange is unusually high, such as exercising and agitation. Smaller particles (less than 1 micron) are most effective in entering the lungs.  The virus particles attach to lung membranes and create a reaction which damages the ability of the lungs to function properly, causing difficulty in breathing, inability to transfer oxygen, damage to other organs, and sometimes death.  The definitions of direct transmission, indirect transmission, droplet spread, and aerosolization are understood and used differently by different people, particularly the media.  Recent studies have indicated that the COVID-19 virus is particularly susceptible to sunlight, moisture, and temperature. Droplet spread diseases include the common cold, flu, meningococcal disease, and rubella, while aerosol diseases include chickenpox, measles, and tuberculosis.

4.    We are told that face masks are effective, somewhat effective, or not effective by different experts, that such protection varies with the materials from which the mask is made, and the fit, and that the protection may be different between outgoing vs. incoming infective agents.  General guidance from the CDC currently suggests that most face masks may be somewhat effective in preventing or reducing infectious agents from passing from the wearer to others, rather than from others to the wearer.  Therefore, it requires a social commitment of the potential wearer to protect others.  It is not clear whether all, many, some, or no potential wearers understand this, or accept such a social contract.  We have been warned of the risk that mask wearers may be lulled into a false sense of security by wearing a mask, and ignore other social distance recommendations.  Beyond that, pop-up makers of cloth masks tell you that cloth is the only reliable media for masks, and they try to sell them as a protection for the wearer. Standards exist to measure the effectiveness of face masks, with cloth masks about 50% effective in reducing virus particles, provided they are properly worn and maintained.  Filtration studies reveal that viruses are so small as to require adsorption as the filtration mechanism, with moisture increasing the value of the filter until it breaks down, collects live viruses (thereby creating an additional source of infection), or plugs, which forces aerosols to escape around the mask.  A recent study at Office Depot in Tacoma indicated that about 15 to 35% of checkout customers were wearing face coverings of many sorts; recent increases in availability and two recent orders by the Governor mandating masks in retail establishments have raised that to more than 99% by September 1, 2020.

5.    Although COVID-19 appears to infect all ages, we know that elderly persons, and others with compromised immune systems, and other underlying health conditions (which is poorly defined and quite broad) have a greater risk of death, once they are infected.  Typical case fatality rates (CFR) are at or about 15% in those populations, and less than 5% in other populations. The CFR from March 6 to March 10 in Washington State from the Kirkland care facility was above 15%; since then it dropped to around 4% before rising slowly to 5.5% by early May, then dropping slowly to about 2.6% on September 1.  Deaths are a lagging indicator to identified cases, so persons infected during the early March timeframe were not dying until mid- to late-March. The same pattern emerged in Pierce County, where the current CFR is about 2.2%, since rising to about 4% in mid-May from below 2% since early March.  Pierce County did not experience an initial “bump,” and may have escaped the rapidly rising case and death numbers experienced from Kirkland (which dominated the King County, State of Washington, and even the US reported data for the first 10 days of March), since social distancing and other measures were widely recommended before those who would have been infected in early March would already have exhibited corresponding death rates in late March. Beyond this, the reporting of morbidity and case fatality rates is likely skewed due to decisions to address risks to health care workers and those with symptoms or immune system issues (the most likely to have the disease) first.  As a result, future morbidity and mortality rates may in fact drop further. 

6.    Efforts are underway to increase the percentage of persons tested above the current (September 1, 2020) levels of 23% and 18% (formerly 12.6% and 8.8% on July 15; and 5.1% and 4.4% on May 29) of the total population for the US and the State of Washington, respectively.  Pierce County had a 4.0% tested rate on June 23, but ceased reporting this data on that date. Of those tested, 7.7% and 5.1% (formerly 8.2% and 5.9% on July 15; and 10.4% and 6.1% testing positive on May 29) of those tested positive in the US and the State of Washington, respectively.  Note that the data for positive tests for the US as a whole differ between what the CDC reports (over 10%) and the Johns Hopkins database, from which other national and state figures in this report are extracted. Again, Pierce County had a 6.6% positive test rate on June 23, but ceased reporting this data on that date. Any of these rates are well below the 50-60% thought by many to be needed to confer herd immunity.

7.    A major jump in new cases began in both the US and Washington State during the first week of June, continued a steep increase to July 15, before  following a gradual decline since July 15 through September 1. The July 15 7-day average new case data (about 67,000) was much higher than the previous peak of about 31,000 for the US but has since dropped to about 42,000 on September 1; and for Washington State was also substantially higher (about 970 on July 15 vs. 180 in late May), but has since dropped to about 460 on September 1. 

8.    Case fatality rates (number of deaths divided by number of cases) rose to a peak during the 2nd and 3rd week of May in the US; the 4th week of April in Washington State, and the 4th week of May through the 2nd week of June in Pierce County, before dropping to about 3.1, 2.6, and 2.2 in the US, Washington, and Pierce County, respectively, on September 1. The trend is downward, as one might expect as the number of tests in the general population increases relative to the skewed sample early testing of specially susceptible individuals and associated healthcare workers.    

9.    COVID-19 reported death rates fall disproportionately among older persons and persons with other diseases or immune system disorders.  The “outbreaks” resulting in COVID-19 deaths in this population are considered “premature deaths;” and reduce the number of deaths of some fraction of the same persons from other causes during the same or later time frames. To put it bluntly, if I die today of something, I can’t die tomorrow of something else. Of the Pierce County deaths reported as of July 15, 89% were over age 60, a cohort which constitutes only 21% of the population. There are recent challenges to the reported COVID-19 death rates, as only a fraction appear to be exclusively, or primarily, COVID-19 deaths with influenza, pneumonia, and other respiratory and non-respiratory diseases making large contributing co-mortality.

10. We are told that the usual “incubation period” of COVID-19 probably does not exceed 14 days (though some say it is longer), but that a period of infectivity may begin before symptoms are apparent to the infected individual or others, with infectivity being greatest in the middle of the period (presumably something akin to a “bell-shaped curve”); and with greatest infectivity in, say, the 6th to 10th day. We do not know how long the period of infectivity lasts for those with and without symptoms.

11.  The media has been full of reports, both positive and negative, about the effectiveness and safety of various treatment modalities, including those associated with hydroxychloroquine, azithromycin, zinc, dexamethasone, and remdesivir.

12. We do not know whether persons who have contracted the virus (and tested positive) and recovered, have acquired immunity for future attacks of the same, or similar, viruses, or whether such immunity may be short-term or longer term.  Until we acquire case and death data from a greater, and more representative, proportion of the general population, we will be only guessing about herd immunity. Beyond that, a debate exists between those who believe the proper approach is to quarantine those who have been diagnosed with COVID19 or are especially susceptible to it (a fraction of the population in the few percentages of the total), and therefore allow herd immunity to develop among the rest, a large fraction of whom will exhibit little or no symptoms in the process (the examples of tour boat and military ship outbreaks are instructive here).  The arguers for this position say the current efforts to quarantine virtually the entire population, with ensuing economic, social, religious, and political impacts, will virtually assure that a second and third harmonic of cases and deaths will occur, once restrictions are lifted. There is mounting evidence that the new normalized case and death rates in the US approach those of countries, such as Sweden, which did not enact sweeping shut down requirements, and which greatly exceed those of others who did (eg., Norway, Denmark, Finland).  There is also mounting evidence of “bumps” in new cases in those states which opened prematurely (i.e., before meeting Federal guidelines). Major increases in cases occurred leading up to July 15 in Florida, Texas, California, Arizona, and Georgia, but all but California have seen a relatively steep downward trend to September 1.

13. The role of government in requiring vaccination may prove crucial in the future, once an effective, safe, vaccination protocol is found. A case in point is the difference between the mandatory vaccination laws governing childhood diseases (with some religious and other exceptions, recently changed in Washington State law), versus the voluntary flu vaccination recommendations. Lab results reported in the past few weeks suggest that a vaccine protocol proof of concept in lab animals has been achieved, and several vaccines have moved to the animal testing phase.

14. We do not know whether, or the extent to which, the virus may mutate to other more (or less) dangerous forms. There is some evidence that such mutations are not uncommon.

15. We know that COVID19 virus community episodes seem to behave as other viruses and communicable diseases do, namely a logarithmic growth phase, a leveling off period, and a decline.  The slopes of the lines give the best evidence of the place a community is in on the curve; the area under the curve represents the total extent of the pandemic (classical differential and integral calculus is in play here).  This is why we are urged to take necessary steps to “flatten the curve” (thereby spreading it out in time to give more time to deal with shortages and take other preventive and treatment steps). Flattening the curve implies we are at the top of the number of cases (or deaths), and the public needs to understand that a number of new cases (or deaths) perhaps nearly equivalent to the numbers already experienced will be occur as the curve returns to near zero. Beyond that, every new “bump,” such as that experienced in the past few weeks, will increase the number occurring on the way back to “normal.”

16. The primary means of prevention, in the absence of vaccination, is social distancing for communicable diseases.  Daniel Defoe, in The Journal of the Plague Year, in 1722, described the effectiveness of social distancing by recounting the different results around London in 1665 between those who escaped the city to country places, versus those who were forced (literally) to remain in crowded dwellings with their families, often resulting in the death of the entire family.  

17. The future of the pandemic is largely unknown.  It is complicated by the fact that we have tested only about 18-23% of the population; those tested are skewed toward health care workers and high susceptibility persons; of those tested about 4 to 15% test positive; of those testing positive, death rates range from 2 to 20%; we don’t know how many asymptomatics are out there; we don’t know whether, when, and the degree to which asymptomatics are shedding virus, or how long they will continue to do so; nor the effectiveness of preventive measures such as social distancing and masks; treatment modalities; or the potential effectiveness of vaccines. It is further complicated by the fact that virtually all data comes in from 50 or more different (e.g., state and local) agencies, each of which has its own set of priorities, capabilities, and epidemic management plans (did someone say something about herding cats?).  We don’t know the recovery rate of symptomatics or asymptomatics. We don’t know whether asymptomatics secure immunity from future attacks.    “Flattening the curve” of deaths will follow “flattening the curve” of positive cases by some number of days, and once the curves are flat, new cases and deaths will continue to follow while the numbers return to near zero, and may very well equal or exceed cases and deaths up to the “plateau” or “apex.”  Furthermore, relaxation of the prevention tools may result in a second and third outbreak, as occurred in the 1918 flu epidemic and others.

18.  As of July 15, between 4 and 5% of Pierce County residents had been tested, with a positive COVID-19 infection rate hovering between 6 and 7% of those tested, and the case fatality rate between 3 and 4% of those testing positive. Total number of deaths (90) as a proportion of Pierce County’s total population (about 880,000) is 0.1 per 1000 residents. 

 

Monday, May 11, 2020

What We Know (And Don't) About COVID19



What We Know (And Don’t) About COVID 19
By Ken Karch, MPH
Updated May 9, 2020 Ver.5.0
(Updated material (since 4/25/2020) highlighted)

1.     Members of the general public may be infected by droplet spread from other individuals; there is little evidence that infection can come from animals such as pets, except through intermediate contact with other persons who are infected (an announcement a couple of weeks ago of an apparent COVID-19 case in a tiger at a Bronx (NY) zoo and two house cats in New York are being investigated). There is evidence that the COVID-19 virus is a zoonosis (animal to human spread), and that the initial breakout occurred from a bat population to humans thru a wild meat market or virology lab in China.  From there it apparently found its way to other countries by person-to-person contact.
2.    Droplets are those which we are told have an effective distance of no more than 6 feet; therefore, individuals are asked to maintain a social distance of 6 feet
3.    We do not know whether fine, dry particles containing the virus can survive, and become infective beyond a 6 foot distance. My MPH training indicated that the effective distance of sneeze particles is 15 feet.  Others have suggested that it may be up to 27 feet, or that the virus may be pervasive and infective throughout the general atmosphere near a carrier…this is usually called aerosolized.  There is some evidence that smaller virus particles can be transmitted through normal talking or breathing. Smaller particles (less than 1 micron) are most effective in entering the lungs.  The virus particles attach to lung membranes and create a reaction which damages the ability of the lungs to function properly, causing difficulty in breathing, inability to transfer oxygen, damage to other organs, and sometimes death.  The definitions of direct transmission, indirect transmission, droplet spread, and aerosolization are understood and used differently by different people, particularly the media.  Recent studies have indicated that the COVID-19 virus is particularly susceptible to sunlight, moisture, and temperature. Droplet spread diseases include the common cold, flu, meningococcal disease, and rubella, while aerosol diseases include chickenpox, measles, and tuberculosis.
4.    We are told that face masks are effective, somewhat effective, or not effective by different experts, that such protection varies with the materials from which the mask is made, and the fit, and that the protection may be different between outgoing vs. incoming infective agents.  General guidance currently suggests that most face masks may be somewhat effective in preventing or reducing infectious agents from passing from the wearer to others, rather than from others to the wearer.  Therefore, it requires a social commitment of the potential wearer to protect others.  It is not clear whether all, many, some, or no potential wearers understand this, or accept such a social contract.  We have been warned of the risk that mask wearers may be lulled into a false sense of security by wearing a mask, and ignore other social distance recommendations.  Beyond that, pop-up makers of cloth masks tell you that cloth is the only reliable media for masks, and they try to sell them as a protection for the wearer. Standards exist to measure the effectivenss of face masks, with cloth masks about 50% effective in reducing virus particles, provided they are properly worn and maintained. 
5.    Although COVID-19 appears to infect all ages, we know that elderly persons, and others with compromised immune systems, and other underlying health conditions (which is poorly defined and quite broad) have a greater risk of death, once they are infected.  Typical case fatality rates (CFR) are at or about 15% in those populations, and less than 5% in other populations. The CFR from March 6 to March 10 in Washington State from the Kirkland care facility was about 15%; since then it dropped to around 4% before rising slowly to 5 to 6%.  Deaths are a lagging indicator to identified cases, so persons infected during the early March timeframe were not dying until mid- to late March. The same pattern emerged in Pierce County, where the current CFR is between 3 and 4%, and had been below 2% since early March.  Pierce County did not experience an initial “bump,” and may have escaped the rapidly rising case and death numbers experienced from Kirkland (which dominated the King County, State of Washington, and even the US reported data for the first 10 days of March), since social distancing and other measures were widely recommended before those who would have been infected in early March would already have exhibited corresponding death rates in late March. Beyond this, the reporting of morbidity and case fatality rates is likely skewed due to decisions to address risks to health care workers and those with symptoms or immune system issues (the most likely to have the disease) first.  As a result, future morbidity and mortality rates may in fact drop further. 
6.    COVID-19 reported death rates fall disproportionately among older persons and persons with other diseases or immune system disorders.  The “outbreaks” resulting in COVID-19 deaths in this population are considered “premature deaths;” and reduce the number of deaths of some fraction of the same persons from other causes during the same or later time frames. To put it bluntly, if I die today of something, I can’t die tomorrow of something else.
7.    We are told that the usual “incubation period” of COVID-19 probably does not exceed 14 days (though some say it is longer), but that a period of infectivity may begin before symptoms are apparent to the infected individual or others, with infectivity being greatest in the middle of the period (presumably something akin to a “bell-shaped curve”); and with greatest infectivity in, say, the 6th to 10th day.
8.    We do not know whether persons who have contracted the virus (and tested positive) and recovered, have acquired immunity for future attacks of the same, or similar, viruses, or whether such immunity may be short-term or longer term.  Until we acquire case and death data from a greater proportion of the general population, we will be only guessing about herd immunity. Beyond that, a debate exists between those who believe the proper approach is to quarantine those who have been diagnosed with COVID19 or are especially susceptible to it (a fraction of the population in the few percentages of the total), and therefore allow herd immunity to develop among the rest, a large fraction of whom will exhibit little or no symptoms in the process (the examples of tour boat and military ship outbreaks are instructive here).  The arguers for this position say the current efforts to quarantine virtually the entire population, with ensuing economic, social, religious, and political impacts, will virtually assure that a second and third harmonic of cases and deaths will occur, once restrictions are lifted.
9.    The role of government in requiring vaccination may prove crucial in the future, once an effective, safe, vaccination protocol is found. A case in point is the difference between the mandatory vaccination laws governing childhood diseases (with some religious and other exceptions, recently changed in Washington State law), versus the voluntary flu vaccination recommendations.
10. We do not know whether, or the extent to which, the virus may mutate to other more (or less) dangerous forms. There is some evidence that such mutations are not uncommon.
11.  We know that COVID19 virus community episodes seem to behave as other viruses and communicable diseases do, namely a logarithmic growth phase, a leveling off period, and a decline.  The slopes of the lines give the best evidence of the place a community is in on the curve; the area under the curve represents the total extent of the pandemic (classical differential and integral calculus is in play here).  This is why we are urged to take necessary steps to “flatten the curve” (thereby spreading it out in time to give more time to deal with shortages and take other preventive and treatment steps).
12. The primary means of prevention, in the absence of vaccination, is social distancing for communicable diseases.  Daniel Defoe, in The Journal of the Plague Year, in 1722, described the effectiveness of social distancing by recounting the different results around London in 1665 between those who escaped the city to country places, versus those who were forced (literally) to remain in crowded dwellings with their families, often resulting in the death of the entire family.  
13. The future of the pandemic is largely unknown.  It is complicated by the fact that we have tested less than 2% of the population; those tested are skewed toward health care workers and high susceptibility persons; of those tested about 4 to 15% test positive; of those testing positive, death rates range from 2 to 20%; we don’t know how many asymptomatics are out there; we don’t know whether, when, and the degree to which asymptomatics are shedding virus; nor the effectiveness of preventive measures such as social distancing and masks; treatment modalities; or the expectation of vaccines. It is further complicated by the fact that virtually all data comes in from 50 or more different (e.g., state and local) agencies, each of which has its own set of priorities, capabilities, and epidemic management plans (did someone say something about herding cats?).  We don’t know the recovery rate of symptomatics or asymptomatics. We don’t know whether asymptomatics secure immunity from future attacks.    “Flattening the curve” of deaths will follow “flattening the curve” of positive cases by some number of days, and once the curves are flat, new cases and deaths will continue to follow while the numbers return to near zero, and may very well equal or exceed cases and deaths up to the “plateau” or “apex.”  Furthermore, relaxation of the prevention tools may result in a second and third outbreak, as occurred in the 1918 flu epidemic and others.


COVID19 Oakbrook Blog Created


Greetings,

I've created this blog to share my experiences as a member of the public health community in the Pierce County, WA area.

This is the first in a series of blog messages. I expect this will be a learning experience for me as well as my readers, who are invited to share their views to this (currently) unmoderated blog.

Remember, your comments will appear as you submit them, for all to read.If you want to gain quick and easy access to this blog, simply bookmark or copy the following address:

http://www.covid19 Oakbrook.blogspot.com/

Hopefully, it will serve as a regular update on issues related to the COVID19 pandemic in the world, US, State of Washington, and Pierce County. 

Please offer your comments so we can continue to better serve your needs. All persons are invited to contribute material for this blog (subject only to minimal limitations pertaining to good taste, etc.), and, as long as such self-controls are observed, the blog will remain unmoderated.


Ken Karch, PE