India continues to be free from swine flu infection with three of the five people suspected to have influenza A (H1N1) testing negative for the disease, officials said on Tuesday.

"The clinical samples of three passengers who were under observation in a government hospital in Delhi have been found to be negative for influenza A(H1N1). We have received samples of two passengers who reported flu symptoms in Kochi and results are expected by Wednesday," an official at the National Institute of Communicable Diseases (NICD) said.