Jerusalem, Sep 10 (DPA) Israel's Central Laboratory for Viral Infections has identified a strand of H1N1 that showed signs of resistance to the Tamiflu drug used to treat swine flu, the ministry of health said Thursday.

The strand was isolated from a sample taken from a swine flu patient in a high risk group that completely recovered from the virus.

The ministry said laboratory tests were continuing and the findings were being evaluated. It noted that resilient forms of the virus have already been discovered elsewhere in the world.