AccessMyLibrary provides FREE access to over 30 million articles from top publications available through your library.
Create a link to this page
Copy and paste this link tag into your Web page or blog:
2003 SEP 10 - (NewsRx.com & NewsRx.net) -- Scientists at the U.S. National Institute of Allergy and Infectious Diseases (NIAID) have created a promising vaccine against West Nile virus by replacing parts of a distantly related virus with proteins from the West Nile virus.
The NIAID research team replaced proteins in a virus known as dengue type 4 with the corresponding West Nile virus proteins, creating a hybrid virus vaccine that protects monkeys from West Nile infection, they reported in a paper published in the September 2003 issue of the journal Virology.
"The Department of Health and Human Services has responded vigorously to emerging infectious diseases, including West Nile Virus, and we aim for the earliest and best possible protection for Americans," said HHS Secretary Tommy G. Thompson. "We will continue aggressive research and development steps, and we will continue to work with our public health partners toward preventing mosquito-borne disease and ensuring effective prevention and treatment."
"West Nile is one of the emerging infectious diseases for which we are developing novel preventive and therapeutic tactics," added NIAID Director Anthony S. Fauci, MD. "Because our researchers have more than a decade of experience working with this class of virus, they could respond very quickly to the urgent public health need for a promising West Nile virus vaccine."
Human clinical trials of the vaccine are expected to begin before the end of 2003. "We're optimistic that our engineered virus vaccine will provide long-term immunity to West Nile virus, but the human clinical trials will give us the definitive data," said Brian Murphy, MD, of the NIAID Laboratory of Infectious Diseases.
West Nile virus was first detected in the United States in 1999. Since then, it has spread rapidly from the northeastern United States throughout North America. Centers for Disease Control and Prevention statistics show that West Nile cases this year are quickly outpacing those for the same period in 2002. The disease is most severe among the elderly.
The potential West Nile vaccine is a live but weakened virus. To create it, scientists took the dengue 4 virus and replaced its outer shell proteins with corresponding proteins from West ...