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Vaccine Shows Promise Against Mosquito-Borne Virus
Date:8/15/2014

By
HealthDay Reporter

THURSDAY, Aug. 14, 2014 (HealthDay News) -- An experimental vaccine to protect people from the mosquito-borne chikungunya virus has shown promise in its first human trial.

"This vaccine was safe and well-tolerated, and we believe that this vaccine makes a type of antibody that is effective against chikungunya," said trial leader Dr. Julie Ledgerwood, chief of the clinical trials program at the U.S. National Institute of Allergy and Infectious Diseases.

Currently, there are no vaccines or drugs to treat this debilitating infection, which causes fever and intensely painful, severe arthritis.

Chikungunya has spread from its origins in Africa to Asia and the Caribbean, including Puerto Rico and the U.S. Virgin Islands. Last month, the first U.S. cases were reported in Florida, according to the U.S. Centers for Disease Control and Prevention.

The new report was published online Aug. 15 in The Lancet.

Ledgerwood said the next step is to test the vaccine in more people and more age groups. The current study looked at 25 people who were between the ages of 18 and 50. The vaccine also needs to be tested in populations where the virus is endemic, to see if it really prevents people from getting the disease, she added.

Testing will take more than five years before a vaccine could be offered to the public, however, Ledgerwood said. Should the vaccine prove safe and effective, it could be given to people living in areas where chikungunya is endemic and also to travelers and military personnel going to those places, she said.

"In areas where this virus is active, people feel the need for the vaccine is great," Ledgerwood said.

Chikungunya (pronounced chick-en-gun-ye) virus causes high fevers, joint pain and swelling, headac
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