Medical X-Press – Len Canter
An infection of the respiratory system, pertussis jumped from fewer than 2,000 cases in the United States in the 1970s and 1980s to more than 48,000 in 2012, according to the U.S. Centers for Disease Control and Prevention. Although the number of cases is down from that peak, it’s nowhere near the lows of earlier decades following the introduction of the pertussis vaccine. https://medicalxpress.com/news/2018-12-whopping-whooping.html