After 49 year old Mousumi Mishra succumbed to swine flu, the Bidhannagar Municipal Corporation dived to action to detect the virus whether it was already present in the locality or came from surrounding areas. A civic medical team will head towards collecting blood sample if needed from FE Block of salt lake where mousumi Mishra used to live. Till date there has been no such H1N1 virus in the salt lake area. The virus is expected to be borne from outside, as records said. Fever survey is expected to give response about the virus.