The Centers for Disease Control and Prevention (CDC) has issued a Health Alert Network (HAN) Health Advisory to notify clinicians, public health officials, and potential travelers about a measles outbreak in Texas and New Mexico and offer guidance for prevention and monitoring. As of March 7, 2025, Texas and New Mexico have reported 208 confirmed cases associated with this outbreak (198 in Texas and 10 in New Mexico). As a part of this outbreak, two deaths have been reported: one in Texas and one in New Mexico. More cases are expected as this outbreak continues to expand rapidly.