New flu strain emerging as a severe health threat

A new form of the flu, which is highly contagious and aggressive, is sweeping the nation this season.

A mutation of influenza A H3N2, called subclade K, has been detected as the culprit in rising global cases, including in the U.S.

The World Health Organization stated on its website that the K variant marks "a notable evolution in influenza A (H3N2) viruses," which some say calls into question the effectiveness of this season's vacine against the strain.

The K variant causes more intense flu symptoms, including fever, chills, headache, fatigue, cough, sore throat and runny nose, according to experts.

Among 216 influenza A(H3N2) viruses collected since Sept. 28, 89.8% belonged to subclade K, a CDC report states.

More at the source: Fox 5 Atlanta

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