Lucknow, Aug 11 - Eleven people in Uttar Pradesh tested positive for swine flu virus Tuesday, taking the total figure of the infected people to 12 in the state.

Eight of these infected people belong to the family of the first swine flu case - five-year-old Hasan Rizvi, who returned from Britain a few days ago.

Hasan is the grandson of former Congress minister Ammar Rizvi.

Of the remaining three, there was an eight-year-old who returned from Singapore recently. The sample of an 18-year-old man from Allahabad has also tested positive, while the third person belongs to Faizabad.

'We had carried out tests of about 50 samples, out of which 11 turned out to be positive,' said S. Dhole, professor and head of the department of microbiology at the Sanjay Gandhi Post-Graduate Institute of Medical Sciences (SGPGIMS) here.

'But this should not be cause for any kind of panic as each of the detected cases was found carrying only primary infection, that is easily curable,' he said.