A new variant of influenza H3N2 is spreading in other countries. But that could mean the U.S. is in for a rough flu season. The mutated strain, known as subclade K, is causing a surge in cases in the ...

A mutated version of the flu is causing a wave of infections around the world. Known as subclade K, it may evade the current flu vaccine. Infectious disease doctors say we may be in for a bad flu ...

Flu season isn't in full swing yet in the United States, but a mutated strain of the virus that has caused severe outbreaks abroad is sparking concern about the winter ahead. A new version of ...

The United States may be heading into its second severe flu season in a row, driven by a mutated strain called subclade K that’s behind early surges in the United Kingdom, Canada and Japan. Now, with ...

Massachusetts could be headed for a sharp uptick in flu cases in the coming weeks, public health experts warn, as a newly mutated strain is surging in the United Kingdom and appears to be only a ...

Flu season isn't in full swing yet in the United States, but a mutated strain of the virus that caused severe outbreaks abroad is sparking concern about the winter ahead. A new version of influenza A ...

Forbes contributors publish independent expert analyses and insights. Dr. Omer Awan is a practicing physician who covers public health. A new mutated strain of the common flu, Influenza H3N2, subclade ...

An unexpected strain of the influenza virus is already driving up case counts abroad. Is it heading for the U.S.? An unexpected strain of the influenza A (H3N2) virus, called subclade K, is driving up ...