California is seeing the number of pertussis, or whooping cough cases at levels not seen in several years, and it’s likely to increase, according to a  California Department of Public Health (CDPH)...

The California Department of Public Health (CDPH) said that cases of pertussis, or whooping cough in the state are on the rise; in fact, compared to 2013, the number of cases are triple this year. CDPH...

In less than five months into 2014, Sacramento County health officials are reporting an outbreak of pertussis, or whooping cough, with the number of cases to date being higher than the total cases recorded...