There is no evidence yet that the outbreak is extraordinary yet and Chinese officials have pushed back against claims of yet ...

The Centers for Disease Control and Prevention is keeping close eye on pandemic indicators amid bird flu cases arising in the ...

Respiratory illness activity is currently considered "high" in the United States, according to the CDC. In one state, it is ...

suggesting the changes emerged in the patient after infection," the CDC said in an announcement on its website. "While these low frequency changes are rare in humans, they have been reported in ...