A mutated strain of influenza A, H3N2 subclade K, is surging worldwide, sparking concern about a severe flu season in the U.S. Here's what to symptoms to look out for.

Add Yahoo as a preferred source to see more of our stories on Google. As flu cases rise nationwide, it’s important to know what symptoms to look out for and how to keep yourself and others safe.

It's not easy to tell these health conditions apart based on their symptoms alone. Find out about the differences between these illnesses.

Flu season is still in full swing across the U.S., with cases rapidly rising in Illinois and its surrounding states due to an emerging strain. Here's what to know about the flu, including symptoms to ...

How flu viruses enter cells has been directly observed thanks to a new microscopy technique with the potential to revolutionize research on membrane biology, virus–host interactions and drug discovery ...

As flu cases spike across Western Massachusetts, we're getting answers on how it’s impacting our community and getting a ...

Public health experts in South Carolina are urging residents to get a flu shot as cases rise. Several hospital systems have implemented visitation restrictions to protect patients and staff from the ...

As flu cases rise nationwide, it’s important to know what symptoms to look out for and how to keep yourself and others safe. Here’s what you need to know. Influenza, also known as the flu, is a ...