Other types of HIV vaccine are being studied, such as those based on pieces of the virus's coat or genetically engineered canary pox viruses containing HIV genes.
42.
It usually takes two to three weeks from the time a person is exposed to the chicken pox virus, known as varicella, to the onset of illness.
43.
Generally CNPV is considered a disease of songbirds, such as canaries, magpies and nightingales, and is associated with higher mortality rates when compared to other avian pox viruses.
44.
The 24 monkeys received a series of three inoculations : two DNA-based vaccines delivered eight weeks apart to prime the immune system and a single pox virus booster.
45.
Another experimental vaccine, which uses a live canary pox virus that has been loaded with HIV genes followed by a booster shot of gp-120, is on the drawing boards.
46.
Dr . Bernard Moss of the NIAID, a co-author and developer the pox virus part of the vaccine system, said the seven months between vaccination and infection was significant.
47.
The stronger natural form of the chicken pox virus also remains in the body permanently once the symptoms of the disease have passed, usually taking residence in nerve fibers.
48.
An experimental smallpox vaccine believed to be safer than the traditional vaccination has been shown in laboratory tests to effectively protect monkeys and mice against a pox virus, researchers say.
49.
Researchers at Harvard University are looking at the properties of anthrax toxins, and scientists at the Scripps Research Institute in La Jolla are working on monoclonal antibodies to combat pox viruses.
50.
The new smallpox vaccine to be produced by Acambis and the one to come from the joint venture will be made, like the old vaccine, from a live pox virus called vaccinia.
