While T cells can’t prevent infection like B cells can, they still help soften the blow-of a BA.2.86 infection, EG.5 infection, or otherwise. The other, oft-forgotten half of the immune system, T cells, provides protection against severe disease. Still, there is more to immunity than antibodies, produced by B cells in response to infection and vaccination. The updated vaccine’s protection against Pirola won’t be as good as the protection it offers against EG.5 and other XBB variants, Ray said. It’s not a member of the XBB family, and is instead thought to have evolved from so-called “stealth Omicron” BA.2. Recently released preliminary data shows that refreshed boosters should also offer decent protection against new, highly mutated Omicron spawn “Pirola” BA.2.86. Stuart Ray, vice chair of medicine for data integrity and analytics at Johns Hopkins’ Department of Medicine, told Fortune on Tuesday. The formula for the new vaccines “is highly similar to the EG.5-related variants circulating now,” Dr. While the newest jabs are tailored to a dying strain of Omicron, they’re still expected to protect against severe disease and death from currently circulating strains, the vast majority of which are members of the XBB viral family. infections Friday, according to the latest variant data the CDC has made available. XBB.1.5 was estimated to be responsible for just 2.2% of U.S.
and elsewhere late last year into early this year. This year’s boosters are monovalent, meaning they’re tailored to just one strain of the virus: XBB.1.5 “Kraken,” which dominated in the U.S. Last year’s updated Omicron boosters, released around Labor Day, were bivalent, tailored to both Omicron and the initial strain of COVID. “We continue to strongly urge everyone to stay up to date on their COVID-19, influenza, and RSV vaccines to protect themselves and their loved ones from severe complications, hospitalization, and death,” the organization said, adding that it expected an increase in infections this fall and winter. Shortly thereafter, the federal health agency announced that it had accepted the committee’s recommendation, and that vaccines would be available later in the week. The agency’s Advisory Committee on Immunization Practices voted 13-1 Tuesday to approve updated jabs from Moderna, Pfizer, and Novavax for the vast majority of U.S. approves updated XBB boostersĪll Americans ages 6 months and older are eligible to receive an updated COVID booster tailored to the XBB Omicron strain, the CDC announced this week. Vaccinating and boosting with any available version “remains vitally important to saving people’s lives now,” officials said.
WHO officials encouraged those at high risk for poor outcomes from the virus, like the elderly and immunocompromised, to obtain a booster ASAP-even if it’s not the latest XBB formula being rolled out in some parts of the world. Vaccination, in addition to early diagnosis and access to care, can prevent severe disease and death, she said. The World Health Organization continues to receive reports on concerning COVID trends, including a growing number of countries reporting an increase in infections, hospitalizations, and ICU admissions, Maria Van Kerkhove, technical lead for COVID-19 response, said at a Thursday news conference. 2, the most recent period for which the federal health agency made data available.
Hospitalizations rose nearly 9% from Aug. Centers for Disease Control and Prevention. Infections aside, COVID hospitalizations and deaths are continuing to rise, according to the latest data available from the U.S. But they may not fall much more, if any, before the anticipated fall and winter surge. 6idiApRyyP- JWeiland September 11, 2023īoth Biobot data and Wieland’s modeling show U.S. FLip is growing, but not fast enough to peak later than late Sept. population will be infected over the next month and a half, Weiland predicted.įorecast out to mid October: Prediction is difficult at the moment with a lot of factors at play, so this is a range for now. Take note: JP's model based on US wastewater indicates the current wave for infections is approaching the level of the ancestral, Alpha and Delta waves - Eric Topol September 8, 2023Īn additional 7% to 10% of the U.S. On Thursday, Weiland estimated that 650,000 Americans are becoming infected daily, with 1 in 51 Americans currently infected with COVID. A forecast issued this week by Jay Weiland, a leading COVID modeler, came to the same conclusions.
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