New Delhi, July 27 - At least 25 people were detected with influenza A H1N1) virus Monday taking the total number of swine flu cases in the country to 454, a health official said here.

'About 2,077 people have been tested so far, of which 454 are positive for Influenza A(H1N1). Of the 454 positive cases, 311 have been discharged. Rest are admitted in hospitals,' said a statement issued here by the union health ministry.

Pune reported eight cases, Delhi seven while in Chennai four cases were detected.

Although there was no official confirmation till late evening from the union health ministry, sources said all the cases reported in Pune are children who had returned from the US.

Hyderabad had three cases, while Bangalore, Chandigarh and Patiala in Punjab reported one case each.