Egg allergy usually starts in infancy, but most children grow out of it. Learn about the symptoms and diagnosis of egg allergy, as well as ways to avoid exposure to egg.
Colds and flu statistics
Trusted facts and figures about colds and flu (influenza), including statistics on different types of flu, risk levels, outbreaks and pandemics.
Colds and flu types
There are several types of colds and flu (influenza). The information and resources on this page cover the most common forms.
Influenza A (flu)
Influenza A is a highly contagious respiratory illness. It’s not usually dangerous if you are healthy, but can cause serious problems if you’re not. Find out more about what influenza A is, what the symptoms are and how to treat it.