New Delhi: In what could be a cause of concern for the national capital, the World Health Organisation (WHO) has found the polio virus in the city`s sewage. The Delhi government is on alert and has increased surveillance and immunisation of susceptible children.The WHO, along with the Delhi government, carried out the environmental surveillance under the National Polio Surveillance Project (NPSP) from April 2010 till December.The surveillance was done at five places along the Yamuna -- Bhalaswa Lake, Red Cross Hospital in Seemapuri, Swarn Cinema in the trans-Yamuna area, Wazipur JJ Colony and Batla House in Okhla. According to the WHO, the presence of wild polio virus was found before the Commonwealth Games in October when a lot of migration was taking place during the preparation for the mega event."Both Type 1 and Type 3 polio viruses were detected in the sewage samples from Delhi during 2010," Hamid Jafari, project manager of WHO-NPSP, said.Jafari said: "The environmental surveillance is very strategic since Delhi is a major hub of migrant labourers and also because of its proximity to the historically polio endemic and high-risk areas of Uttar Pradesh.""It is a cause of concern for us because if there is polio virus circulating in the environment then there is a risk of infection in children," said C.M. Khanijo, officer on special duty at the pulse polio cell of the Delhi government.
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