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Whooping Cough Strain Changed Over Decades

August 27, 2010 8:38 a.m.

The whooping cough our parents or even grandparents were exposed to is probably not the same whooping cough now causing the worst epidemic in California in 50 years. The Centers for Disease Control has confirmed six of the seven cases it’s studied so far have been caused by a strain which produces more toxins.

Related Story: Whooping Cough Strain Changed Over Decades


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