I read a few articles about this. The data is all over with some claiming 50% infected, some 95% and even 10%. There is no evidence to support any cause other that they seem to have a higher infection rate aroung tourist areas.
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The pollution link is quite a stretch at this point. Either way though, dont throw your trash in the water!
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The pollution link is quite a stretch at this point. Either way though, dont throw your trash in the water!