Op-Ed: Why Did Fauci Move the Herd Immunity Goal Posts?
December 29, 2020
Late last week,
Fauci told the New York Times that new science had changed his thinking on the herd immunity threshold -- but he also admitted that his statements were influenced in part by "his gut feeling that the country is finally ready to hear what he really thinks."
Specifically, the fraction of people who would need immunity to SARS-CoV-2 (either through vaccination or recovery from prior infection) to extinguish the spread of the virus was initially estimated to be 60% to 70%. In recent weeks, Fauci had raised the percentage: from 70% to 75%, and then to 75%, 80%, and 85%.