Health officials have diagnosed a unique type of swine flu in two California children, but it's unclear whether many people will be susceptible to the infection.
The two children were diagnosed last week. One was a 10-year-old boy in San Diego County, and the other a 9-year-old girl in neighboring Imperial County. Both recovered.
The U.S. Centers for Disease Control and Prevention alerted doctors Tuesday, but said there's no reason for the public to take unusual measures.
The virus is resistant to two common antiviral medications, and health officials think the seasonal flu vaccine may not protect against it.
