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A comment on Deadly Whooping Cough, Once Wiped Out, Is Back. Parent comment

Re:Deadly Whooping Cough, Once Wiped Out, Is Back by jon_hendry on Monday August 16, 2010 @06:18PM (#1609491)
"And when and how did it resurrect itself?"

Immigration and tourism from countries with less vaccination.

Combined with reduced vaccination in the US.

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