Pertussis incidence remains high in California, health officials urge prenatal vaccination

Pertussis incidence remains significant in California in 2015 to date as health officials report 3,404 cases this year so far. This number is high, so high that health data shows that this is the highest number of cases reported in the Golden State since the 1950s, with the exception of the 2010 epidemic when 9,159 ["]