Haiti’s rainy season usually begins at the end of March and the beginning of April, but there have been heavy rains in the past few days, so it looks like the wet weather may be arriving early this year. It will be deadly for thousands of Haitians who have been living in makeshift tent cities since the January earthquake. “When the rains come, there will be endless illness in the camps,” says Rüdiger Ehrler, of the aid organization German Agro Action. Tuberculosis, typhoid fever, diphtheria and malaria are all expected. And because Haiti’s natural rainforests now survive on only a tiny portion of the country, the soil can’t soak up sudden downpours, making mudslides and flooding common during heavy rains. For Canadians who thought the worst was over for Haiti, the next few weeks could be a sad surprise.