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tsr snow pkg whooping cough_00004202
tsr snow pkg whooping cough_00004202

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    New CDC advice on whooping cough outbreak

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New CDC advice on whooping cough outbreak

A rise in whooping cough cases has doctors on the alert and asking questions as to why. CNN's Mary Snow reports.

New CDC advice on whooping cough outbreak

A rise in whooping cough cases has doctors on the alert and asking questions as to why. CNN's Mary Snow reports.