A view of the exterior of Children's Health of Orange County (CHOC), is seen here on November 1. Seasonal flu activity is "elevated across the country," with "high" or "very high" respiratory virus activity in more than half of US states.
Mandatory Credit: Allen J. Schaben/Los Angeles Times/Getty Images
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Children's health leaders call for emergency response as respiratory viruses continue to spread across the US
Seasonal flu activity is "elevated across the country," with "high" or "very high" respiratory virus activity in more than half of US states, according to an update published Friday by the US Centers for Disease Control and Prevention.
