Some viruses make you smell tastier to mosquitoes

Zika and dengue fever viruses alter the scent of mice and humans they infect, researchers report in the June 30 issue of Cell. The altered scent attracts mosquitoes, which bite the host, drink their infected blood, and then carry the virus to its next victim. Dengue is spread by mosquitoes in tropical areas around the world, and occasionally in subtropical areas such as the southeastern US. It causes fever, rash, and painful aches, and sometimes hemorrhage and death. More than 50 million dengue cases occur every year, and about 20,000 deaths, most of them in children, according to the National Institutes of Health (NIH) National Institute for Allergy and Infectious Disease. Zika is another mosquito-spread viral disease in the same family as dengue. Although it is uncommon for Zika to cause serious disease in adults, a recent outbreak in South America caused serious birth defects in the unborn children of infected pregnant...