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An epidemic of cholera that has ravaged northern and central Haiti killing 220 people has reached the country's densely populated capital, according to UN health officials.

The Pan American Health Organization (PAHO) said in a statement late Saturday that the Haitian Public Health Ministry's "national reference laboratory today confirmed cases in Ouest Department, including Port-au-Prince."

No specific number of cholera cases in Port-au-Prince was given.

The sudden cholera epidemic, mainly in northern Haiti, has sent officials scrambling to contain a wider outbreak 10 months after an earthquake devastated the Caribbean nation.

Hundreds of thousands of people are still living in impoverished tent cities, particularly around Port-au-Prince, where sanitation is poor and where relief groups say the diarrhea-causing illness could spread rapidly.

The PAHO said that while no cases of cholera have been reported in the neighboring Dominican Republican, the outbreak has prompted the Haitian government "to mobilize a contingency plan in the border area, while the border remains open."

Regional health director Dieula Louissaint said 12 more people died in the Artibonite department in northern Haiti on Saturday, boosting that area's toll to 206, while 14 people died in central Haiti.

"We cannot continue to treat cholera in this structure where we are also seeing other kinds of patients," Louissaint said. "We need to establish specific treatment centers."

Around 3,000 people have been admitted to hospitals and health centers near the northern city of Saint Marc which is struggling to cope with the overwhelming rush of sick patients as Haiti grapples with its first cholera outbreak in over a century.

More than 50 inmates at a prison in the center of the country have been infected with cholera, and three inmates have died, officials said.

"The situation is under control. The population should not give in to panic, but people must take hygienic measures seriously," warned Jocelyne Pierre-Louis, a physician with the health ministry.

President Rene Preval and Health Minister Alex Larsen toured regions affected by the epidemic on Saturday, as authorities vowed they were working to provide clean water to residents.

On Friday, the health ministry asked the United Nations operations in Haiti to take charge of distributing medication that is being sent by international donors.

The Canadian government has offered to set up a military hospital in Haiti and the United States has pledged to set up large tents to treat patients on the ground.

Canada, which has its own sizeable Haitian population, also offered to send one million Canadian dollars to help fight the spread of the outbreak.

"Canada is worried about the risk that this serious disease spreads to other communities," Canadian Prime Minister Stephen Harper said.

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（中国日报网英语点津 Helen 编辑）

Todd Balazovic is a reporter for the Metro Section of China Daily. Born in Mineapolis Minnesota in the US, he graduated from Central Michigan University and has worked for the China daily for one year.