A Pueblo resident was exposed to a measles outbreak in Mexico during travel and tested positive for the disease. Here's everything you need to know.

An unvaccinated adult who lives in Pueblo developed measles after visiting a part of Mexico that has an ongoing outbreak.

Dr. Rachel Herlihy, state epidemiologist for the Colorado Department of Public Health and Environment, states, “Measles is actually the most transmissible infectious disease that we know of. It's much more infectious than other infectious diseases that we see more commonly and have come to know over the last couple of years.

The Texas health department reported 422 cases of measles in the state on Tuesday, an increase from 400 in its previous count on March 28. Separately, New Mexico reported four additional measles cases from its report on March 28,

The US has more measles cases this year than in all of 2024, the CDC said last week. Here’s what else you need to know about the outbreaks.

Twenty-three measles cases have been reported in Kansas, and the state health department said they could be linked to an ongoing outbreak that has infected at least 379 people across Texas, New Mexico and Oklahoma.