New Delhi, July 28 - Twenty-one people, including a year-old child, were Tuesday detected with swine flu, taking the total number of the influenza A(H1N1) cases in India to 475, health officials said here.

A high level meeting of joint monitoring group in Delhi decided that no school should be shut after swine flu detection instead infected students should be home quarantined.

Most of those tested positive Tuesday were children. The youngest, who came from London and was detected with the swine flu, is a one-year-old boy from Thiruvananthapuram.

'About 2,184 persons have been tested so far, out of whom 475 are positive for Influenza A(H1N1). Of the 475 positive cases, 353 have been discharged,' according to an official statement issued here.

On Tuesday, 21 new confirmed cases were reported with Pune for the second consecutive day reporting the maximum number of swine flu cases in the country. Seven people were tested positive for the flu in the Maharashtra city followed by Delhi (5), two each in Gurgaon and Bangalore, and one each in Mumbai, Hyderabad, Kozhikode, Trivandrum and Punjab.

Out of the five cases in Delhi, four people, including two teenagers and a two-year-old boy, contracted the virus from those who had the flu earlier.

A 10-year-old boy who had come from Frankfurt and had reached Delhi July 27 was tested positive. He was detected at the airport and was admitted to an identified health facility.

The number of swine flu cases in Maharashtra Tuesday touched 101, with the maximum cases reported from Pune so far, a senior health official said.

Pune has already been declared a pandemic city and a total of 66 cases, including 48 children, have tested positive, state Swine Flu Control Room head Pradeep Awatre told IANS.