There is controversy surrounding the outbreak of cholera in Haiti, after American scientists from the Centers for Disease Control identified that the strain of the disease which has emerged there matches strains commonly found in South Asia.
This has led to angry protests by Haitians against the presence of United Nations peacekeepers from Nepal, where cholera is endemic.
It follows the devastating earthquake which struck Haiti on 12 January and killed more than 230,000 people.
Listen to Vincenzo Pugliese 
20 secs
Vincenzo Pugliese from the UN Stabilisation Mission in Haiti, MINUSTAH, says his troops should not be blamed.
Jonathan Katz, who is covering the story for the Associated Press in Port-au-Prince, has visited the UN peacekeepers' base.
Listen to Jonathan Katz 3 mins
First broadcast 2 November 2010
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