“West Nile Vaccine at Least Three Years off”

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Acambis will move its experimental West Nile virus vaccine into human clinical trials this summer, but a marketable product will not enter the market for at least three years, according to spokeswoman Lyndsay Wright. Other companies are working on a West Nile vaccine, but Acambis is the first to move the drug into clinical trials. Encouraging results from pre-clinical trials give researchers hope about its eventual approval. The vaccine is based on the yellow fever vaccine and has a combination of genetically engineered yellow fever virus and West Nile virus. The National Institute of Allergies and Infectious Diseases in the United States is working on a West Nile virus vaccine based on the dengue fever virus vaccine.

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