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The Omicron variant of the coronavirus is spreading faster than the Delta variant and is causing infections in people already vaccinated or who have recovered from the COVID-19 disease, the head ...
People who had Covid-19 and are later reinfected with the omicron variant may experience fewer symptoms than they did during their initial bout with the virus.
Based on previous data, that means people with omicron could start becoming contagious as soon as a day after infection. It’s not yet clear, but some early data suggests people might become ...
In May 2022, a preprint indicated Omicron subvariants BA.4 and BA.5 could cause a large share of COVID-19 reinfections, beyond the increase of reinfections caused by the Omicron lineage, even for people who were infected by Omicron BA.1 due to increases in immune evasion, especially for the unvaccinated. However, the observed escape of BA.4 and ...
Cases are expected to spike, but holiday gatherings can be safe, even without masks, if everyone is vaccinated and boosted, Fauci says.
A news article on Nature reports there are signals that Omicron does not multiply readily in lung tissue. The latest results could mean that "the virus establishes a very local infection in the upper airways and has less chance to go and wreak havoc in the lungs", which might make it easier "to hitch a ride on material expelled from the nose ...
BA.2.86 was first reported by Denmark and Israel. [1] [11] On 18 August 2023, when only six cases had been reported from four countries (Denmark, Israel, the United Kingdom and the United States), the British healthcare authorities noted that its almost simultaneous appearance in several countries still operating detailed genomic surveillance indicated that it likely already was spreading more ...
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