New Delhi, Aug 7 - Three Delhi doctors tested positive for influenza A(H1N1) Friday and have been quarantined in a designated hospital, a health official said.

'Three doctors have tested positive for swine flu today,' Delhi Health Secretary J.P. Singh told IANS Friday.

He said that Delhi Health Minister Kiran Walia had said that 'all hospitals under the Delhi government will screen and counsel swine flu patients, but whether they are to be quarantined will depend on the doctor'.

Walia held a meeting with her ministry officials and asked them to follow the guidelines issued by the union health ministry.

According to Walia, there are 31 swine flu patients in Delhi currently. Of these, 20 are admitted to various hospitals across the city while the remaining 11 are quarantined at home.

Meanwhile, a Class 6 student of Sanskriti School who was suspected to be down with swine flu Thursday evening tested negative for the disease Friday after her samples were sent to the National Institute of Communicable Diseases (NICD).