As flu season approaches, people are lining up for flu shots.
Flu vaccines provide defense against the virus. Many doctors recommend getting one yearly, especially for those most vulnerable to getting sick.
The flu vaccine was introduced in the 1950s. It has always been good for one season against a particular strain of influenza. Researchers at the University of Oxford thinks this could one day be a thing of the past.
Right now, they are working to develop a vaccine that could target any type of influenza virus. This would make getting a flu vaccine annually unnecessary.
The scientists hope to create a universal flu vaccine. You would get two shots when you are young and then boosters later in life.
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