Real-world evidence reported during a BA.2, BA2.12.1, BA.4, and BA.5 omicron surge showed an association between nirmatrelvir–ritonavir treatment and reduced 28-day all-cause hospitalisation, ...

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The variant first documented in the United Kingdom, B.1.1.7, will now also be known simply as Alpha, while the variant that Abdool Karim named in South Africa will be called Beta. And so on.

The newest variant — NB.1.8.1. or “Nimbus” — may cause painful sore throats, earning it a new nickname: “razor blade throat” COVID.

A new COVID-19 variant, called NB.1.8.1, might be behind nearly a third of new cases, according to health officials. This variant, which some people are calling “Nimbus,” is getting attention ...

Also known as "Nimbus," the new COVID variant NB.1.8.1 is characterized by its extremely painful sore throat, described as "razor blade throat." ...

A new COVID-19 variant called NB.1.8.1 is seeing a surge in US and has become a cause of concern for health officials. Designated as NB.1.8.1, the Nimbus strain is a descendant of Omicron and may be ...