There have been an estimated 140 million Covid-19 infections in the US, the CDC estimates, even though only 74.3 million cases have been reported as of January 31
The data comes from the CDC's nationwide antibody seroprevalence survey, in which it's working with state, local, academic and commercial partners to test blood samples for antibodies to the coronavirus triggered by infection, not by vaccination. By measuring Covid-19 seroprevalence, the study provides an estimate of the percentage of the population that was previously infected.
"Who's having blood work done? People who have access to health care. And what do we know about this virus? ... It disproportionately impacted communities of lower socioeconomic statuses, communities that also tend to have a lower access to health care," she said, noting that the seroprevalence measure is probably an underestimate. Nevertheless, the data offers a snapshot of one source of immunity for the US population."As we're peeling back these mandates ...
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