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Whooping cough cases confirmed at another Pasadena school
The Pasadena Public Health Department Health announced it is investigating an outbreak of whooping cough involving three confirmed cases at Blair Middle School.
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Pasadena health officials confirm whooping cough outbreak at school
Whooping cough cases are on the rise: CDC
How to protect yourself as whooping cough outbreak hits California
What parents need to know as whooping cough cases surge
CDC concerned not enough pregnant women getting vaccines
Orange County baby dies from whooping cough
Clusters of whooping cough reported at LA schools
Whooping cough vaccine safe for pregnant women - study
Whooping-cough cases up in Los Angeles County
Whooping cough cases reach epidemic levels
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