That could lower the risk that people will get sick from contaminated hamburger and other sources. However, finding the vaccine will be a challenge, since the strain frequently picks up bits of genetic material from other bacteria and viruses. There are more signs that AIDS is making a comeback. Researchers in San Francisco says the number of HIV infections among the city's gay men havs more than doubled in the past four years. Federal health officials say similar results are showing up in other cities, including Los Angeles and Mmiami.
Doctors cite several factors, including less motivation to avoid high-risk behavior.
What your doctor doesn't know about food poisoning may be hurting you. The American Medical Association has teamed up with the government to teach doctors how to recognize, treat, and prevent food borne illnesses. The Centers for Disease Control says there are 76 million cases every year, and 5,000 deaths. The new AMA kit includes charts that list symptoms, along with likely sources and treatments. One expert says doctors are seeing food-related illnesses that didn't exist when they were in medical school.