Keep your mouth closed given toxic stew in Rio, aquatic Olympians told

Rio de Janeiro

HEALTH experts in Brazil have a word of advice for the Olympic marathon swimmers, sailors and windsurfers competing in Rio de Janeiro's picture-postcard waters next month: Keep your mouth closed.

Despite the government's promises seven years ago to stem the waste that fouls Rio's expansive Guanabara Bay and the city's fabled ocean beaches, officials acknowledge that their efforts to treat raw sewage and scoop up household garbage have fallen far short.