Infection with a pre-Omicron SARS-CoV-2 variant protects against reinfection with a second, although the effect fades almost completely after three years.
on the effectiveness of COVID-19 vaccines suggest that protection against the virus SARS-CoV-2 decreases over time, waning considerably after six months. To learn about the course of naturally acquired immunity, the authors examined COVID-19 data gathered in Qatar between 28 February 2020 and 5 June 2022. “Our study is the first to have such a long time of follow-up,” says co-author Hiam Chemaitelly, an epidemiologist also at Weill Cornell Medicine–Qatar.
Pre-Omicron infection was only 38% effective at preventing infection by an Omicron variant in the first 6 months after Omicron emerged. Modelling suggests that the number will drop to 10% at 15 months. Other potential caveats exist. The authors’ projections assume that the immune response changes at a specific rate, when in fact that rate depends on the length of time since a person caught the virus, says Crotty. Therefore, immune responses measured at one point in time might not allow accurate predictions of the future.
Brasil Últimas Notícias, Brasil Manchetes
Similar News:Você também pode ler notícias semelhantes a esta que coletamos de outras fontes de notícias.
A rape, an abortion, and a one-source story: a child's ordeal becomes national newsThe Indianapolis Star's story about an anonymous child rape victim from Ohio who crossed state lines to get an abortion became a political lightning rod. Now a man has been arraigned for the rape.
Consulte Mais informação »
Watch: The Air One Personal eVTOL Just Completed Its First Hover TestAn ambitious new personal eVTOL is one step closer to production. The Israeli aviation startup Air announced this week that a full-scale version prototype of its first vehicle, called the Air One, …
Consulte Mais informação »
Twitter is testing custom-built timelines, starting first with one for The BacheloretteThey sound a little bit like lists.
Consulte Mais informação »
The odd GMC SUV is one of the hottest collector cars todayThe 1992-1993 GMC Typhoon has seen a surge in auction prices over the past year, making it one of the hottest collector cars, according to Classic.com.
Consulte Mais informação »
Trump finds the one word he’ll no longer say to his own followersMany of Trump's devotees continue to believe that the he's effectively infallible. There is, however, one notable exception. (via MaddowBlog)
Consulte Mais informação »
Four teens shot, one fatally, on the west side of IndianapolisIndianapolis police responded after a teen was fatally shot July 13, 2022 in the 3600 block of Merrick Way. Three other teens were injured.
Consulte Mais informação »