According to NHRC communiqué released on Thursday evening, 315 infants died due to this disease jut in Eastern UP this year while 67 fell prey in West Bengal. During the monsoon, static water becomes breeding ground for mosquitoes and the presence of a number of piggeries makes the ground for incubation of the disease in pigs. According to the media report, there is a large gap in demand and supply of the preventive vaccine, absence of which makes the children under 10 years of age the most vulnerable to the disease due to nutritional deficiency, with which, according to a UNICEF report, 50 per cent of Indian children and more than 70 per cent of women are affected.