Scientists develop new Chikungunya vaccine

(NBC) — Scientists say a newly developed vaccine may help protect Americans against the Chikungunya virus. The mosquito-borne illness — which causes severe joint pain, headache and fever — has spread to the United States over the past year. For the study, 23 healthy volunteers were given different dosages of the vaccine over a 20-week span.

All of the subjects built up antibodies to the Chikungunya virus for at least 11 months after the final vaccination — even those who got the lowest dose.

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