The study marks the first large-scale study of its kind, researchers said. The study was conducted by identifying antibodies in healthy individuals through a finger prick test, which indicated whether they had already contracted and recovered from the virus.
At the time of the study, Santa Clara county had 1,094 confirmed cases of Covid-19, resulting in 50 deaths. But based on the rate of people who have antibodies, it is likely that between 48,000 and 81,000 people had been infected in Santa Clara county by early April – a number approximately 50 to 80 times higher.
That also means coronavirus is potentially much less deadly to the overall population than initially thought. As of Tuesday, the US’s coronavirus death rate was 4.1% and Stanford researchers said their findings show a death rate of just 0.12% to 0.2%.
The study has been interpreted by some to mean we are closer to herd immunity – the concept that if enough people in a population have developed antibodies to a disease that population becomes immune – than expected. This would allow some to more quickly get back to work, a strategy currently being deployed in Sweden.
April 4
https://www.stanforddaily.com/2020/...ers-test-3200-people-for-covid-19-antibodies/
April 17
https://www.theguardian.com/world/2...s-far-more-widespread-than-previously-thought
At the time of the study, Santa Clara county had 1,094 confirmed cases of Covid-19, resulting in 50 deaths. But based on the rate of people who have antibodies, it is likely that between 48,000 and 81,000 people had been infected in Santa Clara county by early April – a number approximately 50 to 80 times higher.
That also means coronavirus is potentially much less deadly to the overall population than initially thought. As of Tuesday, the US’s coronavirus death rate was 4.1% and Stanford researchers said their findings show a death rate of just 0.12% to 0.2%.
The study has been interpreted by some to mean we are closer to herd immunity – the concept that if enough people in a population have developed antibodies to a disease that population becomes immune – than expected. This would allow some to more quickly get back to work, a strategy currently being deployed in Sweden.
April 4
https://www.stanforddaily.com/2020/...ers-test-3200-people-for-covid-19-antibodies/
April 17
https://www.theguardian.com/world/2...s-far-more-widespread-than-previously-thought