Why did so many California kids get whooping cough despite being vaccinated?
Monday, February 29, 2016 - 13:50
in Health & Medicine
When California had its biggest pertussis outbreak in more than half a century in 2010, the kids who fell sick most were 10- and 11-year-olds. That struck public health experts as odd. Children receive five doses of the vaccine that protects against the illness — also known as whooping cough —...