New Swine Flu

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From the article:

"WASHINGTON, April 23 (Reuters) - Seven people have been diagnosed with a new kind of swine flu in California and Texas, the U.S. Centers for Disease Control and Prevention reported on Thursday. All seven people have recovered but the virus itself is a never-before-seen mixture of viruses typical among pigs, birds and humans, the CDC said. "We are likely to find more cases," the CDC's Dr. Anne Schuchat told a telephone briefing. "We don't think this is time for major concern around the country." Only one of the seven cases was sick enough to be hospitalized and all have recovered, Schuchat said. CDC officials are unsure whether the cases are related to an unusually late and severe flu season in Mexico in which 20 people have died."

"In the United States, the CDC reported the new strain of swine flu on Tuesday in a boy and a girl from California's two southernmost counties. Now, five more cases have been found via normal surveillance for seasonal influenza. None of the patients, whose symptoms closely resembled seasonal flu, had any direct contact with pigs."

""We believe at this point that human-to-human spread is occurring," Schuchat said. "That's unusual. We don't know yet how widely it is spreading ... We are also working with international partners to understand what is occurring in other parts of the world." The CDC's Dr. Nancy Cox said virus samples from the seven appear to carry genes from swine flu, avian flu and human flu viruses from North America, Europe and Asia. "We haven't seen this strain before, but we hadn't been looking as intensively as we have," Schuchat said. "It's very possible that this is something new that hasn't been happening before.""


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