In a relief to the state, test results of close contacts of the 12-year-old boy who died of Nipah virus, have come out negative for the virus even as the government issued alert to all districts.
The number of contacts under observation rose to 251, of them 141 are health workers who attended the boy in four hospitals and a clinic in Kozhikode district. As many as 51 persons have been hospitalised so far.
Health Minister Veena George said the samples of the parents of the boy and the health workers have tested negative. More samples would be tested on Tuesday, she said.
The minister said an expert team would reach Chathamangalam in Kozhikode district on Wednesday to collect the samples of fruit bats to ascertain the source of infection. Field surveillance and fever surveys have already begun in Chathamangalam and nearby areas, which have been declared as containment zones.