03-12-2022, 02:01 PM
It's been a month since anyone's felt a need to post anything. Â That's good news (but also could be a sign of burnout).
The CDC is finally showing wastewater surveillance numbers.
https://covid.cdc.gov/covid-data-tracker...rveillance
The data is unequally collected in the US. Â It is most densely collected in OH, WI, IL, KS, NY, NC, CO. Â A number of states have zero or one sites collecting data.
While 61% of the sites have levels reduced by 10% or more, 33% have levels increased by 10% or more. Â 9% have gone up by a factor of 10 or more (possibly because they were 0 before and are now 1??)
The number of samples with detection has gone down over the last two weeks.
They don't say anything about variant detection in wastewater.
--
For herd immunity, the seroprevalence numbers is a good way to look at things.
 https://covid.cdc.gov/covid-data-tracker...prevalence
Of blood donors (ie, a select population that is surely not representative of the entire population), 94.7% have antibodies (infection or vaccination).
Separately, the percentage of people that have had COVID is 43.3%, based on antibodies.
The estimate is that 9.8% of the population got their first case of COVID between Dec. 26 and Jan. 29.
--
There have been a number of interesting papers that have come out recently about the effects of COVID.
--
In variants, the CDC indicates 0.0% Delta. Â Of the 3 Omicron variants, B.1.1.529 (15%) was being slowly supplanted by BA.1.1 (74%) but now BA.2 (12%) is starting to grow, depressing BA.1.1.
The CDC is finally showing wastewater surveillance numbers.
https://covid.cdc.gov/covid-data-tracker...rveillance
The data is unequally collected in the US. Â It is most densely collected in OH, WI, IL, KS, NY, NC, CO. Â A number of states have zero or one sites collecting data.
While 61% of the sites have levels reduced by 10% or more, 33% have levels increased by 10% or more. Â 9% have gone up by a factor of 10 or more (possibly because they were 0 before and are now 1??)
The number of samples with detection has gone down over the last two weeks.
They don't say anything about variant detection in wastewater.
--
For herd immunity, the seroprevalence numbers is a good way to look at things.
 https://covid.cdc.gov/covid-data-tracker...prevalence
Of blood donors (ie, a select population that is surely not representative of the entire population), 94.7% have antibodies (infection or vaccination).
Separately, the percentage of people that have had COVID is 43.3%, based on antibodies.
The estimate is that 9.8% of the population got their first case of COVID between Dec. 26 and Jan. 29.
--
There have been a number of interesting papers that have come out recently about the effects of COVID.
--
In variants, the CDC indicates 0.0% Delta. Â Of the 3 Omicron variants, B.1.1.529 (15%) was being slowly supplanted by BA.1.1 (74%) but now BA.2 (12%) is starting to grow, depressing BA.1.1.