Whooping cough outbreaks: Why is pertussis on the rise in several countries? - Livescience.com
livescience.comSubmitted by livescience8748 in health
Notable outbreaks of whooping cough, or pertussis, have raised concern in some countries.
Submitted by livescience8748 in health
Notable outbreaks of whooping cough, or pertussis, have raised concern in some countries.