Disaster specialists say the slow pace of clearing the rubble - and decomposing bodies beneath the debris - from last month's earthquake in Haiti has left residents vulnerable to the spread of diseases such as typhoid and cholera.
With the rainy season fast approaching, one expert even warns that there will be more dead people in the next four to six weeks than during the earthquake itself.
Rene Preval, the Haitian president, has warned that the death toll from the quake could now reach 300,000.
Al Jazeera's Steve Chao reports from Port-au-Prince.
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