The Brief Texas state health officials issued a health alert after four confirmed measles cases in unvaccinated Montgomery County residents. State health officials are urging residents and health care professionals in Montgomery County to stay alert after a recent measles outbreak affected a local family. Measles cases in Montgomery CountyWhat we know:The Texas Department of State Health Services (DSHS) issued a health alert after four Montgomery County residents in the same family tested positive for measles. Measles is a highly contagious viral illness that spreads through coughing, sneezing, or simply sharing physical space with an infected person. If you suspect you have measles or have been exposed to someone who has it, health officials urge you to isolate yourself immediately.