Health authorities in Oklahoma are urging its citizens to get vaccinated as it reports the worst whooping cough outbreak in the state in 50 years. At least 66 people so far have developed the disease, officials say. Neighboring state Texas has over 2,229 reported cases. On the west coast, California has already broken the 50 year-old record, with nearly 7,000 reported cases. Ohio has 1,461 reported cases, Michigan 1,165, Minnesota 698 and Pennsylvannia 677...
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