NEW: Top members of Biden’s COVID response team are warning internally that the U.S. may not reach herd immunity until Thanksgiving or even the start of winter—months later than originally calculated—according to two senior administration officials trib.al/F2HmixN
Beyond supply issues, top health officials say they are increasingly worried about the United Kingdom and South African COVID-19 variants, the likelihood that more variants will emerge, and the possibility that those variants will evade the vaccines trib.al/F2HmixN
Dr. Fauci, who has previously calculated that about 75 percent of the U.S. population would need to get vaccinated to reach herd immunity, said in an interview that he is still “cautiously optimistic” that the country can achieve that goal by the fall trib.al/F2HmixN
“Once we get into mass vaccination when the general public starts getting it by the end of the spring…and we get past any vaccine hesitancy, then we should be able to reach that 70 or 75 percent mark," Fauci said. "We’re going in the right direction.” trib.al/F2HmixN
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