TAking an antiviral medication before and after sexual encounters was effective at preventing a group of gay men and transgender women from contracting HIV.
Scientists have created a strain of mosquitoes with genes that block the transmission of malaria. The newly created strain produces antibodies that block malaria and these genes are passed on to 99.5% of its children.
People who use smokeless tobacco products are exposed to as much or more nicotine and cancer-causing chemicals in tobacco products as cigarette smokers, according to a government study.