This is the VOA Special English Health Report.

An outbreak of cholera in Haiti continues to spread sickness and worry. Health officials are worried that the capital could suffer a major outbreak of the disease.

So far most cases in Port-au-Prince have been found in people who arrived in the city already sick. But now health officials have confirmed the first case in a boy who had not left the city for at least a year. And there are other suspected cases in the Haitian capital.

Cholera causes diarrhea and vomiting. It robs the body of fluids. People can get cholera if they eat foods or drink liquids containing the bacteria that cause the infection.

Cholera is not hard to treat. Basically, patients drink a solution of salt, sugar and water.

The problem is that help is not always available quickly. If cholera is not treated, it can kill within hours, especially in people already in weakened conditions.

The earthquake in January displaced large numbers of people. It forced them into crowded, dirty conditions in tent camps -- in other words, the perfect environment for cholera.

The outbreak in Haiti has already killed several hundred people. The country's last major outbreak of the disease was more than 100 years ago.

Disease-control experts from the United States confirmed the first cases of cholera in Haiti on October 21st in the Artibonite area. The outbreak was mostly limited to that area until a powerful storm struck Haiti last Friday.

Hurricane Tomas caused heavy rains and flooding and some deaths. The number of cholera cases had been dropping last week but then rose sharply after the storm.

Medical workers in Haiti are now trying to spread the message not to use river water without some form of purification. People are being urged to take steps like adding a small amount of bleach to the water or boiling it for at least a full minute.

Workers are also struggling to provide clean bottled water and water purification tablets.

People are being urged to wash their hands carefully with soap and purified water after using the toilet or changing a baby's diaper. The same advice goes for before eating, and before and after preparing food. If no soap is available, then ash can be used instead.

And that's the VOA Special English Health Report, written by Caty Weaver. You can read transcripts and download our programs at voaspecialenglish.com. We're also on Facebook, Twitter and YouTube at VOA Learning English. I'm Faith Lapidus.

（来源：VOA 编辑：陈丹妮）