NEW : President Felipe Calderon travels to Hermosillo to meet with health officials . NEW : The Mexican government has announced that it will pay for the first round of vaccinations in Mexico City and other cities where there are outbreaks of measles. The cause of Friday 's blaze remained unknown , but investigators concluded that the fire did not start inside the ABC Day Care , Eduardo Bours , the governor of Sonora state said . NEW : 23 children remained hospitalized , 15 of them in critical condition . One child admitted to Shriners Hospitals in Sacramento , California .
NEW : President Felipe Calderon travels to Hermosillo to meet with health officials . NEW : The Mexican government has announced that it will pay for the first round of vaccinations in Mexico City and other cities where there are outbreaks of measles. NEW : 23 children remained hospitalized , 15 of them in critical condition . One child admitted to Shriners Hospitals in Sacramento , California .