The State Department of Health recommends a three-pronged approach to fighting the flu: get a vaccine, cover coughs and sneezes, and stay home if you’re sick.
Parents will be able to view their child's vaccinations records online using the state website.
The delay comes after officials expressed concern that the policy change would keep many kids from getting vaccinated for the upcoming school year.
Many physicians have been sending insured patients to public health clinics, which receive government funded vaccines.
State health officials say Indiana is experiencing its largest outbreak of whooping cough, including two infant deaths, since 1959.