Scientists discover astonishing flu that has recombined with swines birds and people, but say: "There's nothing to worry about."

Scientists keep a close eye on flu viruses that emerge from pigs. The animals are considered particularly susceptible to both avian and human viruses and a likely place where the kind of genetic reassortment can take place that might lead to a new form of pandemic flu, said Dr. John Treanor, an infectious disease specialist at the University of Rochester Medical Center.

SHOOT: Here's a case of recombination and scientists are saying, "No problem." It's also something researchers haven't seen before. "No problem." The swine flu's symptoms are fever, cough and sore throat, though some of the seven also experienced vomiting and diarrhea. Nice.

clipped from health.yahoo.com All of the seven victims recovered from the flu that combines pig, bird and human viruses in a way that researchers have not seen before, the U.S. Centers for Disease Control and Prevention said Thursday. The cases are a growing medical mystery because it's unclear how they caught the virus. The CDC said none of the seven people were in contact with pigs, which is how people usually catch swine flu. And only a few were in contact with each other. Still, health officials said it's not a cause for public alarm: The five in California and two in Texas all recovered, only one person was hospitalized and testing indicates some mainstream antiviral medications seem to work against the virus. CDC officials detected a virus with a unique combination of gene segments that have not been seen in people or pigs before. The bug contains human virus, avian virus from North America and pig viruses from North America, Europe and Asia.