"Most authorities would still recommend use of other preventive methods such as condoms, " even if the HIV-positive sexual partner is on antiretroviral treatment, Kevin De Cock, director of the Center for Global Health at the U.S. Centers for Disease Control and Prevention, wrote in an email.
The authors recommend Congress and other authorities use the findings to help decide where to invest in high-speed rail projects and other measures to ease airport congestion.
The International Federation of Horseracing Authorities, or IFHA, is examining whether to recommend a total ban on administering steroids to horses, according to Roland Devolz, the IFHA's technical adviser on prohibited substances.