According to WILX-TV 10, a small but growing proportion of the youngest children in the U.S. have not been vaccinated against any disease, worrying health officials.

An estimated 100,000 young children have not had a vaccination against any of the 14 diseases for which shots are recommended, according to the CDC.

Most young children have had all their shots.  The new estimate is based on finding that, in 2017, 1.3 percent of the children born in 2015 were completely unvaccinated.

Young children are especially vulnerable to complications from vaccine-preventable diseases, some of which can be fatal.  The latest numbers come from a telephone survey last year of the parents of about 15,000 toddlers.