A rapidly expanding measles outbreak in Texas has grown to 90 confirmed cases, with an additional nine cases reported in neighboring New Mexico, marking the largest outbreak in the region in over 30 years [1, 8].

The Texas Department of State Health Services reports that most cases are concentrated in Gaines County, where 57 cases have been identified. The outbreak has primarily affected children, with 26 cases in children under 4 years old and 51 cases in those aged 5-17 [18, 24].

Of particular concern, 16 patients have required hospitalization, and health officials warn the outbreak is likely to continue growing. The vast majority of cases have occurred in unvaccinated individuals or those with unknown vaccination status, with only five cases reported among vaccinated people [8, 12].

'This is the tip of the iceberg,' said Rekha Lakshmanan, chief strategy officer for The Immunization Partnership in Houston. 'I think this is going to get a lot worse before it gets better' [12].

The outbreak has prompted new exposure warnings after an infected individual from Gaines County visited multiple locations across Texas, including Texas State University in San Marcos and tourist attractions along San Antonio's River Walk [2, 5].

Dr. Anita Kurian, Deputy Director at the San Antonio Metropolitan Health District, emphasized the severity of the situation: 'Measles is a highly contagious virus that can lead to serious complications, especially in young children and individuals with weakened immune systems' [5].

Health officials note that Gaines County has one of the highest vaccine exemption rates in Texas at 18%, significantly below the 95% vaccination rate required for effective community protection [6, 18].

The Centers for Disease Control and Prevention recommends two doses of the MMR (measles, mumps, and rubella) vaccine, with the first dose at 12-15 months of age and the second between ages 4-6. The vaccine is 97% effective at preventing measles when both doses are received [1].