A New More Severe Flu Variant Is Spreading In The U.S. Here’s What To Know

Influenza Virus Colorized Tem, Negative Stained. Surface Glycoproteins Are Clearly Visible. (Photo By BSIP/UIG Via Getty Images) Universal Images Group via Getty Images

A new mutated strain of the common flu, Influenza H3N2, subclade K, is spreading across the northern hemisphere, including the United States. This particular mutated strain of Influenza has gained dominance in many countries, including Japan, the U.K. and Canada.

In fact, Japan declared an influenza epidemic after experiencing a surge of flu infections. The U.K. has also experienced a wave of early flu infections. Although flu activity in the United States remains low, cases are on the rise and the dominant strain currently is Influenza A H3N2, according to the CDC . Here’s what to know about the H3N2 strain of the