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Initial antibody results just in from San Miguel County. PCR tests had shown just 8 positives out of 8,000 residents 1/1000.Initial antibody tests on 986 show 8 positive, 23 borderline, balance negative. Potentially 31/986 or 1/32 positive vs 1/1000 based on PCR testing. 30X more
Second round testing may show borderline results are positive and initial negatives become positive as it takes as much as 10 days for antibodies to emerge from exposure to the virus. Anecdotal evidence in NYC is similar. Many in NYC with symptoms choose not to get tested.
San Miguel quarantined early which explains less widespread exposure. NYC is a very different story. Northern Italy estimates 60% exposure.
