A flu strain that emerged over the summer is causing "unprecedented" outbreaks in Japan, as well as in Canada and the U.K.
Severe flu outbreaks across globe raise concerns for the US as experts warn of early, intense H3N2 activity and vaccine challenges this season.
A seasonal flu virus suddenly mutated in the summer. It appears to evade some of our immunity, has kick-started a flu season ...
How bad will this year’s flu season be in the United States? At the moment, we have no answer to that important question.
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