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2. Environmental Factors

In some regions, infection rates of trachoma can be as high as 60 to 90 percent. Researchers have identified at least three baseline risk factors for severe trachoma: socioeconomic status, hygiene, and distance to water. In developing countries, the inability of some people to have ready access to water limits the opportunity for them to exercise proper hygiene. This gives the bacteria a chance to propagate, infect, and reinfect. When infection does set in, they may not have the economic means to seek treatment.

water hygiene cleanliness sanitation hadynyah / Getty Images
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