The measles outbreak in Texas has escalated sharply to 90 cases as health officials worry about the spread to more communities.

SAN ANTONIO — The number of measles cases connected to the West Texas outbreak has now grown to 90. Experts said being unvaccinated drives your chance at contracting the disease much higher, but there's a way to find out if you need the needle.

The measles outbreak in rural West Texas has grown to 90 cases across seven counties, the state health department posted online Friday, and 16 people are hospitalized.