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A wall painting in Peru serves as a prevention for diarrhoea
Cholera reappeared on the South American continent in 1991 and claimed many lives—mainly among the poor—because of unsafe water supplies and sanitation as well as scarce knowledge to prevent the disease by simple but effective means among large parts of the population. I am a doctor at the Institute for Social and Preventive Medicine in Berne, Switzerland, and I took this picture in 1999 in the town of Nazca, southern Peru. I think these kinds of measures are cheap, effective (even among the illiterate), last as long as the wall is there or the paint falls off and besides it is great to look at!