The number of flu patients in hospital in England has risen by 18%, following a 55% increase the week before. Other UK-wide ...

The death toll and economic damage associated with flu highlight its role as one of the most harmful viruses in history.

Researchers are striving to understand the impact a phenomenon known as original antigenic sin has on immunity to the virus.

Following a national trend, 52 counties in Florida saw increasing cases of influenza A driven by a new mutation called ...

“The influenza vaccine is not the best vaccine we have. People can still get sick. What it does better is protect you against ...

For the week ending Dec. 13, Canada saw 11,646 new cases of the flu being detected, which means 27.7 per cent of all the ...

We used to assume bird flu was a risk solely for outdoor hunters, but new data suggests the virus is entering the home ...

As Christmas travel accelerates, health authorities in the US, Canada and the UK are tracking a fast-spreading super flu ...

Ahead of the holiday tourist rush, city health officials in New York City reported nearly 14,000 flu cases in the first week ...

A mutated version of the influenza A (H3N2) strain dubbed ‘subclade K’ is spreading in the US and Canada after the UK. Some ...

A surge of influenza among school-aged kids is linked to the recent deaths of multiple Ontario children, prompting calls for ...

The WHO has described it as a seasonal respiratory infection, with symptoms ranging from fever and cough to body aches, sore throat and congestion.