Mattilsynet, Norway's food safety authority, reported H1N1 in two more Norwegian pig herds in late October 2009.

These cases were in the counties of Rogaland and Nord-Trøndelag. As of Oct. 30, 2009, 22 pig herds had been infected with the virus in Nord-Trøndelag county, three in Rogaland, two each in Sør-Trøndelag and Buskerud counties, and one each in Hedmark and Akershus counties.

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Pig farmers were urged to take all necessary measures to prevent the spread of H1N1.