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By Lindsey Tanner The Associated Press

Babies’ whooping cough source likely siblings; vaccinating moms while pregnant can help

CHICAGO Infants are more likely to catch whooping cough from their siblings than their moms, says a study with implications for how to protect them.

Previously, moms were considered the more common source of infection. The change is probably due in part to an increased frequency of whooping cough among school-aged children, the study of government data suggests.