Excitement is building for the 2016 Summer Olympics. The opening ceremony will take place in Rio de Janeiro, Brazil, on August 5. For months, news media have been reporting on Rio’s dirty water, mosquitoes carrying the Zika virus, transportation and security issues. That does not sound promising for a city expecting famous athletes, government leaders and visitors from around the world for the games. But during a recent visit to VOA’s headquarters in Washington, Olympic Organizing Committee chief Sidney Levy said something surprising: his top concern is not the Zika virus. Zika spreads to human beings through mosquito bites. Experts are especially concerned about infected mosquitoes biting pregnant women. They say this could cause microcephaly, which is linked to brain defects from birth.