Nope. Getting the DTaP vaccine does not make you more susceptible to getting pertussis.
Simple math helps show that more unvaccinated kids get sick, and they get more severe illness, during pertussis outbreaks.
What can you do if your child is exposed to pertussis?
Pertactin-negative pertussis bacteria are not driving outbreaks of pertussis or whooping cough, and they have not become resistant to pertussis vaccines.