Children in the age group of 10 and 14 years seem more vulnerable to the virus as nearly 48 percent (245) of swine flu cases reported in India are children.

Out of 574 swine flu cases in India, Bangalore has registered 49 cases.

Experts say it is difficult to differentiate between swine flu and common flu symptoms.

'So anybody having flu like symptoms should immediately check with a doctor. A thorough check up of the patients needs to be done. Those having any respiratory problems like asthma and bronchitis should also see the doctor,' Shashidhar Buggi, director of the Rajiv Gandhi Institute of Chest Diseases (RGICD), told IANS.

The Bangalore-based RGICD has been identified as one of the isolation centre for suspected swine flu cases.

When it comes to children, Buggi said that if a school-going child develops any swine flu like symptoms, including fever and coughing, the child should be immediately checked.

'If the child is found positive, then the entire class, where the child studies should be checked,' he suggested.