The World Is Still Far From Herd Immunity for Coronavirus - The New York Times

The World Is Still Far From Herd Immunity for Coronavirus - The New York Times

We are nowhere near herd immunity Even in the hardest-hit parts of the world, many fewer people have been infected than would be needed to achieve the herd immunity that might slow — but not stop — the outbreak. Serology surveys in places including Wuhan, Madrid and London have tested a cross-section of the population for antibodies against the disease. So far, the highest rate of infections found is around 20%, in New York City. That is well below the required level — something more like 60% (maybe) — to achieve herd immunity. There are many caveats around how the surveys are done and the accuracy of the antibody tests. And we don’t know for sure whether a past infection will give a person immunity, or to what extent. The New York Times | 8 min read