"…Another reason may be because more people are opting not to have their children vaccinated…."
it said this:
"Of the 179 cases in Suffolk so far this year, almost 40 of the patients were students in the Smithtown school district. In June 2010, nearly 40 people, most of them students, contracted whooping cough.
According to Suffolk health officials, all those affected had been immunized in the past, but immunizations are not 100 percent effective. The students did develop less severe symptoms because of their prior vaccinations."
Now, they are talking about the 40 in a school district and not the 179 (whose vaccine status was not mentiooned) but still, every child who got pertussis in the school district had been vaccinated!