... worked effectively on monkeys against laboratory-produced strains of HIV. However, because the virus reproduces so quickly, no vaccine is effective against the true strains of the virus. A company in San Francisco has developed a new vaccine called AIDSVAX made up of two strains of HIV. It has not yet been proven to be safe. The process of trials needed to test AIDSVAX ... ...

• Word Count: 2868
• Approx Pages: 11
• Grade Level: High School