Whooping cough cases have spiked across the U.S. and both Iowa and Illinois recorded more cases in 2012 than they did in each of the last five years.
The whooping cough vaccine contains five different pieces of the disease to protect against several different strains. The C.D.C said the current vaccine won't protect against the newly discovered strain, but said the bigger issue is a vaccine given in the 90's wears off much sooner than expected.
That's led to more people losing their immunity without even realizing it. They're recommending getting a booster shot, while they monitor this new type of whooping cough.
"This is important to be thinking about as we're watching Pertussis and we're seeing cases increasing since the 1980's," C.D.C. Spokesperson Alison Patti said. "Just keeping a close eye on things."
The C.D.C said infants are most at risk and it recommends anyone who will be near them get a booster shot as well as pregnant women in their final trimester.