Three persons have died due to the disease in the state so far.
One person each in Kullu, Kangra and Shimla districts have tested positive for the swine flu today.
As many as 73 blood samples of suspected swine flu patients had been tested so far and 20 of them were found positive, state surveillance officer Dr Rajesh Guleri said.
The state government has provided swine flu test facility at government-run IGMC at Shimla and Dr R P Medical College at Tanda (Kangra) and efforts are being made to give the test report in three to six hours.