an international study suggests cholera epidemics may end due to prolific growth of viruses called cholera phages that eat the disease-causing bugs. The study was conducted by scientists from Kolkata-based National Institute of Cholera and Enteric Diseases, Dhaka-based International Centre for Diarrhoeal Disease Research and Harvard Medical School in Boston, usa (Proceedings of the National Academy of Sciences, Vol 102, No 5).

Researchers analysed water samples taken from two rivers