Four persons tested positive for H1N1 Influenza on Sunday as the total number of swine flu cases rose to 85 in the State.

In accordance with the Union Health Ministry guidelines, many patients who tested positive have opted for home-quarantine.

As many as 55 suspected cases visited Rajiv Gandhi Institute of Chest Diseases (RGICD) and 32 swabs were collected and sent to Nimhans Lab.