Investigators are looking at two Los Angeles County clusters of influenza, but chances are they're the usual seasonal flus, county public health officials are saying on a televised press conference right now. It takes several days to confirm the swine flu virus in the lab. In any case, the prevention and treatment recommendations are the same for both kinds of flu, except for one additional drug that works on the swine variety. The 11 swine flue cases found elsewhere in California have only mild symptoms, nothning at all like what has been reported in Mexico. "We don't know where we are in this pandemic," says Dr. Laurene Mascola. "We are cautiously worried."

Centers for Disease Control swine flu info