Variant NB.1.8.1 accounted for 0% of U.S. cases in April. By mid-June, it was estimated to be the cause of around 37% of cases.

A new, "highly mutated" COVID strain is quickly gaining ground in the United States, according to new data. Variant BA.3.2, nicknamed "Cicada," first drew the attention of health officials earlier ...

A heavily mutated variant of the virus that causes Covid-19 appears to be affecting primarily children, scientists say, though it’s not causing more severe disease – in kids or in adults. Rather, ...

We're keeping an eye on new influenza and SARS-CoV-2 viral variants. Here's what we know about those viruses—and your immune system's ability to fight back. According to the U.S. Centers for Disease ...

A new Covid-19 variant known as “Cicada” has spread to half of the United States, raising alarm among public health officials. The new Covid variant, scientifically designated BA.3.2, was first ...

A variant of COVID-19 called BA.3.2, which has circulated under the radar since late 2024, is now spreading quickly across the United States. There’s no sign so far that BA.3.2, nicknamed Cicada, is ...

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