South Africans are being told to be careful after two people in northern Limpopo province got cholera. Two patients from Zimbabwe were in South Africa recently, the province's health department said. The department found out about the first case when a 43-year-old man tested positive for the virus. A 27-year-old man went to Hellen Franz Hospital. The man is doing okay and both patients are alone in the hospital, the department said. Two cases were brought in from Zimbabwe, which is currently dealing with a disease outbreak. Cholera has killed over 200 people in Zimbabwe. "We ask people to stay calm but alert, and to quickly get medical help if they or anyone they know show symptoms of cholera," the department said.