Tamil Nadu Health Minister Paneerselvam says, preventive measures have been taken to check the spread of H1N1 virus in the state. Speaking to newsmen after a meeting with senior health officials, he said as many as 21 persons who were affected by swine flu are undergoing treatment in different hospitals. He advised people with symptoms of the flu to report to the nearby government hospitals and said adequate stocks of tamiflu tablets are available in all the districts. The health minister said medical teams have been formed in the border areas to screen people coming from neighbouring states<br/>