HotRocks34 wrote:New USC/LA County study on Covid antibodies in the region:
http://www.publichealth.lacounty.gov/phcommon/public/media/mediapubhpdetail.cfm?prid=2328
Summary:
- Seems like 4.1% of adults in LA County may have had exposure to the virus (221,000 to 442,000 adults in LA County, estimate)
- Number previously exposed/infected may be 28-55 times higher than was known at the time of the study (early April)
- Study is ongoing (this was the first round of results)
- Study still needs to be peer reviewed
This seems useful, and possibly makes it better than "potential testing bias" studies like the one Stanford did:
"Participants were recruited via a proprietary database that is representative of the county population"
Sounds like people came from an online survey, not a great way to get a random sample.
When Sara Benincasa, a writer and comic, tells people she’s had the antibody test, their reaction is akin to her getting an envy-inducing script deal.
“Some people assumed I must have some secret hookup,” Benincasa said. “That’s absolutely not the case.”
Instead, she owes her test to an eagle-eyed friend, who showed her an online survey from the county health department and USC. The survey was seeking people to participate in a randomized trial to collect blood samples to test for antibodies.
Since she had exposure to two people who had later been diagnosed with COVID-19, but had no sign of symptoms herself, her friend said she may be a good fit for the study.
https://www.latimes.com/california/story/2020-04-17/coronavirus-antibody-blood-test-experience















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