“It’s scary. Some of these diseases could resurface. All it takes is a plane flight from anywhere overseas,” Bynum said.

“I don’t know of any diseases that have been completely eradicated except for smallpox,” she said. Polio is still a problem in third world countries, she said.

The Cleveland County Health Department has given immunizations to 4,000 children in the last six months. Because not all physicians are on the Oklahoma State Immunization Information System registry, there is no way of knowing the complete immunization figures, Bynum said.

“All health departments are on (the registry), and probably half the providers in the county are on it,” she said.

Bynum recommends caregivers save children’s immunization records “so that children don’t get repeats.”

“If they know children got the immunizations, that’s all I care about. It doesn’t have to be on an official record. Just as long as we know the dates — that’s the important part,” she said.