Good morning, This is our updated website. We are still working on it. Your feedback will help us improve it.
[Skip to Content]
Wirral University Hospital NHS Foundation Trust

Site Search

What causes flu?

Flu is caused by influenza viruses that infect the windpipe and lungs. And because it’s caused by viruses and not bacteria, antibiotics won’t treat it. However, if there are complications from getting flu, antibiotics may be needed.