A mutated strain of influenza A, H3N2 subclade K, is surging worldwide, sparking concern about a severe flu season in the U.S. Here's what to symptoms to look out for.

Breaking news headlines, stories and live updates on current affairs from across the globe. Complete coverage on the latest ...

A variant strain of the coronavirus, one that was first discovered in the United Kingdom, is now the dominant strain of the virus circulating throughout the United States, CDC Director Rochelle ...

A California Department of Public Health dashboard showed high test positivity for influenza throughout the state and a “very ...

Add Yahoo as a preferred source to see more of our stories on Google. Getty Images An alleged warning has spread online for years about a supposed "new COVID-Omicron XBB variant" — a new strain of the ...

A new mutated strain of the common flu, influenza H3N2, subclade K, is spreading across the Northern Hemisphere, including the United States. This particular strain has gained dominance in many ...

The United States is seeking a massive surge in flu cases this winter, many of them attributed to the so-called "super flu." Why it matters: An unprecedented rise in flu cases comes as other ...

The Stratus strain, also known as the ‘Frankenstein’ variant, belongs to the SARS-CoV-2 XFG and XFG.3 lineages and has been spreading swiftly across the United Kingdom, with evidence suggesting it is ...