Immunity To the Coronavirus May Persist for Years, Scientists Find (New York Times by way of /.)

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    • #425912
      Babel 17
      • Total Posts: 4,931

      Immunity to the coronavirus lasts at least a year, possibly a lifetime, improving over time especially after vaccination, according to two new studies. The findings may help put to rest lingering fears that protection against the virus will be short-lived. From a report: Together, the studies suggest that most people who have recovered from Covid-19 and who were later immunized will not need boosters. Vaccinated people who were never infected most likely will need the shots, however, as will a minority who were infected but did not produce a robust immune response. Both reports looked at people who had been exposed to the coronavirus about a year earlier. Cells that retain a memory of the virus persist in the bone marrow and may churn out antibodies whenever needed, according to one of the studies, published on Monday in the journal Nature. The other study, posted online at BioRxiv, a site for biology research, found that these so-called memory B cells continue to mature and strengthen for at least 12 months after the initial infection.

      “The papers are consistent with the growing body of literature that suggests that immunity elicited by infection and vaccination for SARS-CoV-2 appears to be long-lived,” said Scott Hensley, an immunologist at the University of Pennsylvania who was not involved in the research. The studies may soothe fears that immunity to the virus is transient, as is the case with coronaviruses that cause common colds. But those viruses change significantly every few years, Dr. Hensley said. “The reason we get infected with common coronaviruses repetitively throughout life might have much more to do with variation of these viruses rather than immunity,” he said. In fact, memory B cells produced in response to infection with SARS-CoV-2 and enhanced with vaccination are so potent that they thwart even variants of the virus, negating the need for boosters, according to Michel Nussenzweig, an immunologist at Rockefeller University in New York who led the study on memory maturation.

    • #425916
      retired liberal
      • Total Posts: 3,925

      With the pharmaceuticals getting $17 to $20 a shot for every dose, I can see where the money grubbers think they can increase their already obscene profits even more. Looking back, is the 2nd shot even necessary?
      The pharmaceuticals have already made many billions in pure profits, from the research paid for with our tax money.  To say nothing about the 9 new Billionaires from this pandemic. We are being lied to, conned and taken to the cleaners by these greedy fuckers.And don’t forget the pharmaceutical are immune from being sued when they damage or kill anyone.

      We are an arrogant species, believing our fantasy based "facts" are better than the other person's fake facts.
      If you are wrong, it will be because you are not cynical enough.
      The older we get, the less "Life in Prison" is a deterrent.
      Always wear a proper mask when out and about. The life you save could be both yours and mine.

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