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As millions gather for Kumbh Mela, doctors are watching

When a cholera outbreak gripped a London neighbourhood in 1854, physician John Snow carefully mapped its deaths. The thin bars he traced under each address clustered around a water pump on Broad Street, which turned out to be the source of the bacteria. Snow’s studies of disease patterns won him recognition as the father of modern epidemiology—and crushed the prevailing theory that cholera was spread by bad air. Faced with the same challenge today, Snow might use a tablet computer. In mid-January, as the Indian city of Allahabad began ushering in millions of Hindu pilgrims for the religious festival Kumbh … Read more…

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Climate change may alter malaria patterns

Malaria has long been endemic in Kenya’s humid lowlands and its tropical coast. But in recent decades there has been a spike in the number of malaria epidemics in the East African Highlands—an area where the people living there have little experience with the disease. The East African Highlands are high above sea level. Traditionally, the cool breezy climate has been inhospitable to mosquitoes. But in the late 1990s average temperatures in Kenya’s highlands were as much as 4 degrees higher than normal and the incidence of malaria jumped 300 percent. Many experts believe that climate change is fueling this … Read more…