The BA.3.2 'Cicada' Covid variant has been detected in 23 countries with over 70 mutations. Here's what experts say about its spread, symptoms, severity and vaccine protection.

In the cohort that received the BA.5-containing bivalent booster, the neutralizing activity against all the omicron subvariants as compared with that against WA1/2020 was better than in the other two ...

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In recent months, omicron (B.1.1.529) became the dominant variant of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), displaying some degree of immune evasion. 1 The initial omicron ...

The fast-spreading BA.5 subvariant of Omicron and its close relative BA.4 now make up around 95% of COVID-19 cases in the U.S., according to estimates published Tuesday by the Centers for Disease ...

Strain found in 29 states and Puerto Rico carries spike mutations, but no data shows increased severity Sign up for the Breaking News US email to get newsletter alerts in your inbox BA.3.2, an Omicron ...