A、Some people may have got the disease. B、540 people have died of the disease. C、There is official evidence from the government.

Doctors in the Haitian capital Port-au-Prince say an outbreak of cholera has reached the city although there has been no official confirmation. The Haitian government says more than 540 people have died of cholera, and around 8, 000 people have been treated in hospital.
     (6)Cholera may not officially have arrived in Port-au-Prince, but we’ve been told by one leading specialist medical agency that clinically the disease is here. That agency has seen 30 to 50 suspected cases in their hospitals in the city. And in a crowded slum of Cite Soleil, a doctor working there has told the BBC she, too, is seeing patients with all the symptoms of cholera. Cholera is transmitted by infected dung and contaminated water. In the slums and in the earthquake survivor camps of Port-au-Prince, people live in crowded insanitary conditions where the disease can spread quickly.