Ready-to-eat salads are here to make our lives easier: open the bag, serve, dress... and that's it. But a recent European study reminds us that, when it comes to food safety, convenience can come at a ...

At the surface, the immune response to a flu virus is simple. Some cells recognize the pathogen and send a signal to the ...

In 1918, a strain of influenza known as Spanish flu caused a global pandemic, spreading rapidly and killing indiscriminately. Young, old, sick and otherwise-healthy people all became infected ...

Although the avian flu (H5N1) virus may not be making the news as frequently, it is still working hard behind the scenes, ...

New versions of the H5N1 virus are increasingly adept at spreading. Suggestions to either let it rip in poultry or vaccinate the birds could backfire.

The Centers for Disease Control and Prevention (CDC) warned in an internal document that the delta variant of the coronavirus appears to spread as easily as chickenpox and likely causes more ...

By analyzing ancient DNA, scientists determined when, where and how our ancestors got sick from infectious diseases.