September 17, 2010 The state health department now says there have been nine death — all babies. The infants were 2 months old or younger when they got sick. Eight were Hispanic.
July 26, 2010 California is on track to have the worst outbreak of whooping cough in 50 years. Gaps in vaccination have allowed the infectious disease to spread.
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June 24, 2010 An epidemic of pertussis has emerged in California, where five infants have died from the infectious cough already this year.
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