The largest measles outbreak Texas has seen in over 30 years is sweeping through the western part of the state. Health officials suspect that between 200 and 300 people are infected but untested. The vast majority of cases are occurring among the unvaccinated. Last year, 18% of kindergarten students hadn't received the vaccine. Meanwhile, RFK Jr. was in Texas on Tuesday (Feb. 18). He did not mention the unfolding measles crisis. Instead, he falsely suggested that childhood vaccines that protect against measles may be linked to chronic illnesses.