Joe Biden’s chief medical adviser, Anthony Fauci, said on Sunday the US has “the potential to go into a fifth wave” of coronavirus infections amid rising cases and stagnating vaccination rates. He also warned that the newly discovered Omicron variant shows signs of heightened transmissibility.
As Fauci toured the political talk shows, countries around the world including the US scrambled to guard against Omicron, which has stoked fears of vaccine resistance.
On Sunday evening, shortly after the first Omicron cases in North America were confirmed in Canada, the White House said Biden met Fauci and other advisers on returning to Washington from holiday in Nantucket.
Fauci, a statement said, “informed the president that while it will take approximately two more weeks to have more definitive information on the transmissibility, severity, and other characteristics of the variant, he continues to believe that existing vaccines are likely to provide a degree of protection against severe cases of Covid”.
The statement also said those already vaccinated should receive booster shots. Biden would “provide an update about the new variant and the US response on Monday”, the White House said.
Earlier, Fauci discussed why Omicron has raised such alarm.
“Right now we have the window into the mutations that are in this new variant,” he told NBC, “and they are troublesome in the fact that there are about 32 or more variants in that very important spike protein of the virus, which is the business end of the virus.
“In other words, the profile of the mutations strongly suggest that it’s going to have an advantage in transmissibility and that it might evade immune protection that you would get, for example, from the monoclonal antibody or from the convalescent serum after a person’s been infected and possibly even against some of the vaccine-induced antibodies.
“So it’s not necessarily that’s going to happen, but it’s a strong indication that we really need to be prepared for that.”
Omicron variant has originated from South Africa
Fauci also pointed to how Covid case numbers shifted dramatically in South Africa, where Omicron was discovered, over a short period.
“You were having a low level of infection, and then all of a sudden there was this big spike … and when the South Africans looked at it, they said, ‘Oh my goodness. This is a different virus than we’ve been dealing with.’
“So it clearly is giving an indication that it has the capability of transmitting rapidly. That’s the thing that’s causing us now to be concerned, but also to put the pressure on ourselves now to do something about our presentation for this.”
The federal Centers for Disease Control and Prevention (CDC) has said no Omicron cases have been discovered in the US.
Fauci said: “As we all know, when you have a virus that has already gone to multiple countries, inevitably, it will be here.”
On CBS, Fauci said any fifth wave of cases “will really be dependent upon what we do in the next few weeks to a couple of months”.
“We have now about 62 million people in the country who are eligible to be vaccinated,” he said, “who have not yet gotten vaccinated.
“Superimpose upon that the fact that, unquestionably, the people who got vaccinated six, seven, eight, nine, 10 months ago, we’re starting to see an understandable diminution in the level of immunity. It’s called waning immunity, and it was seen more emphatically in other countries before we saw it here.”
Vaccination and booster shots can help
Fauci said an increase in immunization rates and booster shots might prevent another surge – but the US had to act fast.
“So if we now do what I’m talking about in an intense way, we may be able to blunt that,” he said. “If we don’t do it successfully, it is certainly conceivable and maybe likely that we will see another bit of a surge. How bad it gets is dependent upon us and how we mitigate.”
Politically charged resistance would seem to make a rapid increase in vaccination rates unlikely. While more than 70% of US adults are fully vaccinated, the most recent CDC data indicated cases up 16% over the previous week. By Sunday there had been 48,202,506 cases in the US with 776,537 deaths, according to Johns Hopkins University.
Francis Collins, director of the National Institutes of Health, also discussed the Omicron variant on Sunday.
“I think the main thing that has us focused on this,” he told CNN, “… is that it has so many mutations.”
Collins also said there were “good reasons to think it will probably be OK but we need to know the real answers to that and that’s going to take two or three weeks”.
On Friday, Biden said the US would join other countries and impose restrictions on travel from southern Africa from Monday.