MINNEAPOLIS (WCCO) – A new vaccine against a virus spread by mosquitos is showing promise in early tests.

The virus is called Chikungunya.

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It showed up in the U.S. for the first time this year and can cause debilitating joint pain.

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Researchers injected 25 healthy people with the vaccine, all developed high levels of antibodies to fight the virus after the second shot.

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Larger tests will be need before the vaccine could be available to the public.