A new study says the flu A viral strain can adapt shape to stay infectious. Infectious disease doctors break down what this ...

The flu virus is changing in ways never seen before, increasing infections and raising concerns about vaccine effectiveness ...

Each year, flu experts from around the world gather to map out recommendations for next winter's flu vaccine. This year, it's ...

Ohio's health department confirmed Saturday that a farmer in the state was discharged from the hospital after being sickened ...

A dairy worker in Nevada has been confirmed to be infected by a new bird flu strain found to be spreading among cows in the ...

While we often refer to it as "the flu," the influenza virus has several strains. Here's what to know about the two most ...

After a different strain of bird flu was recently found in cattle for the first time, experts reveal what this means in our ...

In the United States, flu shots are updated annually to include multiple types of influenza A and B viruses; scientists pick strains of the viruses expected to be dominant that year.

Actress Barbie Hsu’s death from influenza-related pneumonia has thrown the spotlight on this infectious disease complication.

Flu A and flu B are two different strains of influenza, explains Thomas Russo, M.D., professor and chief of infectious ...

A dairy worker in Nevada is the state’s first human case of bird flu after the employee was exposed to infected dairy cattle.

Federal health officials say a dairy worker in Nevada has been infected with a new type of bird flu that’s different from the ...