A previous COVID-19 infection may offer less protection against future symptomatic infections from omicron compared to other variants, according to research published Feb. 9 in The New England Journal ...

The first known meta-analysis of how SARS-CoV-2 variant type and time since infection influence long-COVID symptoms ties Omicron to brain fog and paresthesia (numbness and tingling), while earlier ...

In a recent study published in the journal Cell, researchers investigated the infectivity, fusogenicity, and immune evasive potential of two novel Omicron subvariants – BA.2.86 and FLip. They used ...

The U.S. is now reporting more than 500,000 new cases of COVID a day, more than twice the previous record set during last winter's surge. One of the big questions with this new omicron variant has ...

CDC Director Rochelle Walensky on Tuesday said there is enough immunity in the U.S. population to provide some protection against the more contagious omicron BA.2 subvariant, which could help stave ...

Postacute sequelae of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection (PASC) can affect many organ systems. However, temporal changes during the coronavirus disease 2019 ...

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A single-center study suggests complement inhibitors do not reduce the severity of a COVID-19 Omicron infection in patients with paroxysmal nocturnal hemoglobinuria (PNH). A COVID-19 infection can ...

Share on Pinterest A study suggests that having the Omicron variant of SARS-CoV-2 alone does not seem to protect against other variants. David Paul Morris/Bloomberg via Getty Images Since Omicron ...