Cumulative seroprevalence for coronavirus antibodies through February. This is just for infection-induced antibodies. A lot of people got infected during the Omicron wave, especially kids that had lower

Latest data on how many people have antibody evidence of previous COVID infection. Overall, it went from 34 to 58% in just two months (Dec-Feb). By age group in February: 0-11: 75% (Up 31 points in just

Rhode Island, Massachusetts, CT, NJ, Vermont, and South Dakota according to this have the highest population immunity. Vermont did it the easy way through vaccination. South Dakota the hard way through

I give you two maps. On the left, we have a map showing frequency of anti-nucleocapsid antibodies, which can only come from infection, not vaccination. On the right, we have a map showing vaccine coverage.

The seroprevalence data for the second half of March is out. In TN, about a quarter of blood samples (taken for reasons unrelated to covid) have antibodies from infection (not vaccination). This comes

While we don't have any official word on what antibody levels are needed for protection, we do have some data that would allow us to make an educated guess. Specifically, we have several studies showing

Link to study: One year later, 70% of people in Wuhan, China who had covid still have detectable levels of antibodies. However, their levels of antibodies have decreased by about two-thirds, leaving one-third

There is a paper out reporting high prevalence of #SARSCoV2 antibodies (IgG/IgM) in Italy from early September on. Factoring in a 1-2 week needed for seroconversion, this would imply that #COVID19 was