Four North Carolina patients at a single hospital tested positive for a type of swine flu that is resistant to Tamiflu, health officials said Friday.

The pandemic of swine flu may be hitting a peak in the Northern Hemisphere, global health officials said on Friday, but they cautioned it was far from over.

Health authorities said Friday they are investigating what could be the world's first cases of person-to-person transmission of a strain of drug-resistant swine flu.

Swine flu has swept through about 22 million Americans between April and October, killing an estimated 3,900 people, including 540 children.

The pandemic of swine flu may be hitting a peak in the United States, health experts said on Friday.

The World Health Organization said Friday it is investigating samples of variant swine flu linked to two deaths and one severe case in Norway, but that so far the significance of the mutation is unclear.

Health officials say four people in North Carolina have tested positive for a type of swine flu that's resistant to the drug Tamiflu.

Health officials say swine flu cases appear to be declining throughout most of the U.S., but the specter of Thanksgiving gatherings makes it hard to predict what will happen next.

Santas across the country are hoping for a little gift from U.S. public health officials -- a chance to cut the line for the swine flu vaccine

Barcelona has confirmed that defender Eric Abidal and midfielder Yaya Toure have swine flu and could be out for the next three games. The players will miss Saturday's Spanish League game against Athletic Bilbao and could be sidelined against Inter Milan in the Champions League on Tuesday followed by the traditional Spanish 'clasico' against Real Madrid the following weekend.