Vaccine years away from approval

August 15, 2014 6:32 AM

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Infection with the virus, spread by two mosquito species, typically is not fatal but can cause debilitating symptoms including fever, headache and severe joint pain lasting weeks or months.

Washington - An experimental vaccine being developed by US government scientists to prevent the painful mosquito-borne viral disease chikungunya has shown promise in its first human trials but remains years away from approval for widespread use.

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