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COVID is on a decline In the United States these days, with the Centers for Disease Control and Prevention (CDC) reports that infectionshave fallen More than 28 percent last week and that hospitalizations are down more than 27 percent. But the pandemic is far from over, and the virus experts have been warning that things could take a turn for the worst at any time, as we have seen many times over the last two years . With the possibility of another wave on the horizon, many vaccinated people are wondering now it's time to get another booster. According to the experts, who may not be the case.

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In a new interview given toAtlantic,John Wherry, PhD, immunologist at the University of Pennsylvania,warned against Getting a second reminder before it is necessary, especially because there is only one type of vaccine available in Covid in the United States right now. According to Wherry, stimulating too often with the original vaccine could cause your immune system to react to more recent and different variants like the Omicron variant with lower efficiency.

ByThe New York Times, Many experts also share this concern of "The original antigenic sin, "Which means that the immune system's response is oriented to the first version of the virus (which the current vaccine has been made for) that its response to emerging variants becomes less powerful.AE0FCC31AE342FD3A1346EBB1F342FCB

Wherry saysAtlantic It recommends waiting for a vaccine that designed alternately, such as a potential mucosal vaccine or Novavax protein shot. "It does not make sense to keep stimulating against a strain that has already disappeared,"Ali Ilbedy, PhD, Immunologist at the University of Washington in St. Louis, saidThe New York Timesin January. "If you are going to add a dose after three, I would definitely wait. »

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For his part, Pfizer seems to feel differently. According toThe Washington Post, The pharmaceutical company justdeposit of emergency authorization of a second reminder injection of their current COVID vaccine for 65 years and over March 15 press reports that the Pfizer Communication at the US Food and Drug Administration, allegations (FDA) than reminder immunity is already in decline against a serious illness for the elderly and includes "real data of the world" collected in Israel, a country that has already authorized a second reminder for this group that the age indicates a fourth shot could reverse this trend .

"We are working at this very intense moment,"Albert Bourla, Chief Executive Officer of Pfizer, said during aWashington post live Event. "I think our data suggests that [fourth doses] protect them greatly improving the protection, the fourth dose compared to the third for Omicron after a while, after, say, three to six months. »

InAtlantic, The experts say that the virus while giving a fourth shot at the moment when the infections are down Covid could provide the elderly more protection for a while, it could also compromise the continuation of their protection if the case start to increase again. Some say that may be a decision on a case by case basis.

LONA MODY, MD, gerium at the University of Michigan, told the news release that it does not believe that there is sufficient data yet to give the green light for the second boosters to all older adults. But she also said that if one of her patients thought they needed a given life situation, their overall state of health, or the level of exposure to their work, "I certainly consider. »

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