Anthony Fauci speaking during a Senate Health, Education, Labor and Pensions Senate hearing on May 12th, 2020.
White House health consultant Dr. Anthony Fauci is concerned about the “durability” of a potential coronavirus vaccine, saying there is a chance it may not provide long-term immunity.
If Covid-19 acts like other coronaviruses, “it will likely not be a long term immunity,” Fauci, director of the National Institute of Allergy and Infectious Diseases, said in an interview Tuesday night with JAMA Editor Howard Bauchner.
“If you look at the history of coronaviruses, the common coronaviruses that cause the common cold, the literature reports that immunity is protected from three to six months to almost always less than a year. , “he said. “That’s not a lot of durability and protection.”
The National Institutes of Health is a fast track biotech firm Moderna on a potential vaccine to prevent Covid-19, which has infected more than 6.28 million people worldwide and killed at least 375,987, according to data compiled by Johns Hopkins University.
Fauci said Tuesday that the biotech company expects to enroll about 30,000 individuals when it begins a phase 3 trial in July. He said there were at least four trials for potential vaccines that he was directly or indirectly involved with.
Fauci said that by the beginning of 2021 “we expect to have” hundreds of millions of doses.
When asked if scientists could find an effective vaccine, Fauci said he was “very optimistic,” adding that “there is really no guarantee.” He warned that “it can take months and months and months to get an answer” before scientists can determine if the vaccine works.
U.S. officials and scientists hope a vaccine to prevent Covid-19 will be ready in the first half of 2021 – 12 to 18 months after Chinese scientists discovered the coronavirus and mapped the genetic sequence its.
It is a record-breaking time frame for a process that typically takes a decade for an effective and safe vaccine. The fastest developing vaccine, glasses, was taken over four years and licensed in 1967.
However, scientists still do not fully understand the basic aspects of the virus, including how the immune systems respond once a person is exposed. The answers, according to them, can have huge implications for vaccine development, including how quickly they can be deployed to the public.
Fauci, the leading contagious infectious disease, told congressional testimony last month that he hoped scientists would find a viable candidate but warned of potential pitfalls in developing any vaccine.
“You can have everything you think in place and you don’t encourage the kind of immune response that turns and is protected,” Fauci said of a vaccine. “So one of the big unknowns is, is it going to be effective? Because of the way the body responds to viruses of this type, I’m cautiously optimistic that we can work with one of the candidates to get a signal of effectiveness. “
WATCH: Expect the Covid-19 vaccine to be periodic, like a flu shot, says Dr. Scott Gottlieb