From the outset of the Trump administration, bird flu, or H5N1 avian influenza, has flown rather conspicuously — and in fact ...

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

You’re not imagining it, flu cases are on the rise this season, as vaccination levels decline and COVID-style social distancing falls by the wayside.

Eastern Ontario is at the epicentre of a tick population boom, and with it, health officials are reporting the highest levels ...

A contagious new COVID-19 variant called NB.1.8.1, aka "Nimbus," is now dominant in the United States, CDC data show. What to know about symptoms and vaccines.