Natural disasters earthquakes, volcanoes, landslides, tsunamis, floods and droughts are catastrophic events which can have a serious impact on health of the society. Triggered by severe earthquakes off the northwest tip of Indonesia, early on Sunday 26 December 2004, a tsunami brought catastrophe on an unprecedented scale, disaster to six countries of the WHO South-East Asia Region (1). The death toll was more than 2.75 lakh with over 4.35 million people affected and displaced. In India, 16389 casualties occurred into the maximum displaced among all countries (1). Rapid response teams of governments at the National and State level in India carried out rescue and relief operations; non-governmental agencies also actively supported in these operations (2). The tsunami-affected people were quickly accommodated in relief camps, and the basic facilities like food, clean water, clothes, medical care and other essential items were provided. In the tsunami-affected villages, the public-health activities in the relief camps were mainly providing sanitation, medical facilities, mosquito control and fever surveillance (2).