India, Dec. 16 -- K Subclade, a mutated strain of the influenza A H3N2 virus. is causing a significant increase in flu cases throughout the US, raising concerns among medical professionals as winter approaches.

Health experts stated that this new variant, referred to as subclade K, has already led to early and severe flu seasons in regions of Asia, Australia, and Europe, and the United States may now be witnessing the onset of a similar trend.

According to the US Centers for Disease Control and Prevention (CDC), flu activity surpassed a critical threshold in early December. For the week ending December 6, 3.2 percent of doctor visits across the nation were attributed to flu-like symptoms, including fever, cough, or sore throat. This per...