That reduces malaria incidence

many studies have shown that building a dam increases incidence of malaria in that area. For instance, after the construction of the Bargi dam on Narmada river in Madhya Pradesh, malaria cases in children increased 2.4 times and the annual parasite incidence increased four times in surrounding villages, compared with that ones far off. Stagnant water, needed by mosquitoes, was the culprit.
But researchers from the National Institute of Malaria Research (nimr), a unit of the Indian Council of Medical Research, suggest that this might not be always true. The group found that a small dam in Orissa