It began as a rumor that farmers saw waste from a U.N. peacekeeping base flow into a river. Within days of the talk, hundreds downstream had died from cholera.

The mounting circumstantial evidence that U.N. peacekeepers from Nepal brought cholera to Haiti was largely dismissed by U.N. officials. Haitians who asked about it were called political or paranoid. Foreigners were accused of playing "the blame game." The World Health Organization said the question was simply "not a priority."

But this week, after anti-U.N. riots and inquiries from health experts, the top U.N. representative in Haiti said he is taking the allegations very seriously.

"It is very important to know if it came from (the Nepalese base) or not, and someday I hope we will find out," U.N. envoy Edmond Mulet told The Associated Press.

The answer would have implications for U.N. peacekeeping missions around the world, he said.

It would affect the relationship between the U.N. and Haiti: If its peacekeepers misled, it could lose credibility for tasks such as helping oversee next week's election. It could affect the job of U.N. humanitarian workers, who work separately from the peacekeepers.

It would help answer scientific questions: Is the source still out there? How does this cholera strain spread? Does it pose a threat to the region, including the southern United States?

When riots broke out across northern Haiti this week, the U.N. blamed them on politicians trying to disrupt the upcoming vote. But observers say the U.N.'s early stance fanned the flames.

"If the U.N. had said from the beginning, 'We're going to look into this' ... I think that, in fact, would have been the best way in reducing public anger," said Brian Concannon, director of the Institute for Justice & Democracy in Haiti. "The way to contribute to public anger is to lie."

Before last month, there had never been a confirmed case of cholera in Haiti.

Then it did happen. There are now more than 1,100 dead; experts say hundreds of thousands will fall ill as the disease haunts Haiti for years.

Even more surprisingly, it did not first appear in a major port, an earthquake tent camp or an area where foreigners are concentrated, but instead along the rural Artibonite River.

Speculation keeps returning to that river and a base home to 454 U.N. peacekeepers from Nepal. They are perched on a babbling waterway called the Boukan Kanni, part of the Meille River that feeds into the Artibonite.

People living nearby have long complained about the stink in the back of the base and sewage in the river. Before the outbreak began they had stopped drinking from that section of the river, depending instead on a source farther up the mountain.

The latest Nepalese deployment came in October, after a summer of cholera outbreaks in Nepal. The changeover at the base, which guards the area south of the central plateau town of Mirebalais, was done in three shifts on Oct. 9, 12 and 16.

Source: AP

Photos: Time