But parents of younger children are generally more cautious, which for some could mean a race to get the shots once their kids are eligible while others choose to wait.

“When I looked at these numbers, I thought: ‘Buckle up, PTAs. Toddler vaccines are the next culture war,'” John Gerzema, CEO of The Harris Poll, told Axios.

In a Harris poll of 306 parents of kids under 5 provided exclusively to Axios, 73% of vaccinated parents said they’re likely to vaccinate their kids under 5, while only 35% of unvaccinated parents would.

On the flip side, 65% of unvaccinated parents said they are unlikely to get their kids under 5 vaccinated, while just 27% of vaccinated parents agreed.