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The United States should have a hundred doses of the first Cvid-19 vaccine candidate ready before the beginning of 2021,Anthony Fauci, MD, said on June 2nd during a session of questions and live answers with theAMERICAN MEDICAL ASSOCIATION JOURNAL. While it'sEncourage With regard to progress on effectivenesscoronavirus vaccineThere are still a number of unknowns: a major being the length of the immunity that a potential vaccine would provide recipients.

In the same Q & A, Fauci, Director of the National Institute of the Institute of Allergy and Infectious Diseases (NIAID), did not prevent to worry about his concern about "sustainability" of a vaccine, saying "it is probablewill not be a long life of immunity. "It attributes its concern about how vaccines for other types of coronaviruses have performed in the past.

"When you look at the history of the coronaviruses, common coronaviruses that cause common cold, the literature reports are that the sustainability of the immunity that is protective from three to six months to almost always less than a year," said Fauci. "It's not a lot of sustainability and protection."

And CNN reports that, depending on, when people develop antibodies to combat common colds caused by other coronavirus strains, thatThe protection generally lasts only a year, which means that people should be vaccinated each year, as needed with the flu.

As long asIf the vaccine will be effective or not, the fact that the majority of people can recover from Covid-19 has "cautiously optimistic" falcions.

"[This] tells us that if the body is able to make an immune response to erase the natural infection virus, it is a very good concept proof," he said. "That said, there is never a guarantee."

The first vaccine candidate is expected to go to Phase III - the last stages of the trial in volunteers - in the middle of the summer and will be tested in people aged 18 to 55, as well as older volunteers with conditions of health. underlying. And for more information on Covid-19 vaccine,That could last the coronavirus vaccine, tell doctors.