In 2012, there was a major outbreak of pertussis in Vermont. As of August 10 of that year, public health officials had determined that 90% of 178 infected children in the state between the ages of six months and 18 years old had received at least one dose of the pertussis vaccine, and that about 80% of them had gotten 5-6 doses. 160 for 178. Hey, not bad. What bunk.