Researchers working on universal flu vaccine

Syracuse (WSYR-TV) - Unlike vaccines for other diseases that are usually effective for several years, a flu shot is only good for one season against a particular strain of influenza.

The next year you have to do it all over again.

But researchers at the University of Oxford are working to develop a vaccine that will target any type of influenza virus and make an annual shot unnecessary.

Imagine a "universal flu vaccine" you would get two shots when you're young, and then boosters later in life.