While the statewide measles vaccination rate for school-age children was 98 percent the previous school year, vaccination coverage in schools in the outbreak area was only 77 percent. Because measles is highly contagious, a 95 percent vaccination rate is needed to protect a community from the disease. As a result, the majority of measles cases occurred in individuals 18 and under, nearly 86 percent of whom were known to be unvaccinated. Two children in Texas with no underlying conditions and one adult in New Mexico have died this year as a result of measles. Following an exposure, those children were prohibited from attending school and childcare for 21 days, the incubation period for measles.