A new COVID-19 strain called Stratus may evade vaccine immunity, experts warn. With rising cases in the UK and unusual ...

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CHICOPEE, Mass. (WWLP) – Doctors are warning of two new COVID-19 strains this summer that are currently going around.

Scientists say the current COVID vaccine is effective against the Nimbus variant and is considered a “variant under ...

A fresh variant of Covid, presenting distinct symptoms and swiftly becoming prominent across the globe, has been identified.

A contagious new COVID-19 variant called NB.1.8.1, aka "Nimbus," is now dominant in the United States, CDC data show. What to know about symptoms and vaccines.