The samples of three patients were being sent for laboratory tests to New Delhi.

'As part of the campaign, we have set up a counter at the Guwahati railway station to enable passengers to report of any swine flu like symptoms for early detection and treatment,' the minister said.

'There is no need for panic and the need of the hour is to be alert.'

Health authorities confirmed that so far there have been no reports of any swine flu cases in Assam, although the adjoining state of Meghalaya Tuesday reported the first H1N1 positive case.

A 17-year-old footballer who had just returned to Shillong from London after undergoing a training camp tested positive for swine flu. He has been isolated and is under treatment.