Whooping Cough Cases in San Diego County Surpass 500, Experts Blame Less-Effective Vaccine
San Diego County has reported more than 500 whopping cough cases from January through May, according preliminary estimates from the county Health and Human Services Agency. Experts attribute the high infection rates -- which are on track to surpass epidemic rates seen in 2010 -- to the vaccine, which they say is less effective than previous versions.
- "SD County Whooping Cough Cases Pass 500" (Sisson, U-T San Diego, 6/8).