HEAVY rains have left Pakistan awash not just with floodwater but also disease. Across Punjab and Sindh, hospitals are overrun with patients suffering from mosquito-borne illnesses and waterborne infections. Entire neighbourhoods have turned into stagnant ponds, ideal breeding grounds for Aedes aegypti. The result is a surge in dengue cases, with malaria close behind. Dirty water is also taking its toll. Reports from relief camps describe children doubled over with diarrhoea, families struggling with gastric pain and vomiting, and doctors battling........

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