Whooping cough reaches epidemic levels in Calif.

By CBS News

The number of whooping cough cases throughout California has reached epidemic proportions, state health officials said Friday.

The California Department of Public Health said in a statement released Friday that more than 800 cases of whooping cough, also known as pertussis, have been reported over the past two weeks. As of June 10, there have been 3,458 cases — more than in all of 2013.

CBS Los Angeles and KNX 1070 news radio report health officials say more than 85 percent of those who have contracted pertussis had preventative shots.

“The vaccine, while it’s very effective when it’s obtained following the first year, each year thereafter, the effectiveness decreases,” said Dr. Wilma Wooten with San Diego County Health and Human Services. “That’s why we’re seeing the infections.”

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