The Centers for Disease Control and Prevention recommended yesterday wider use of a new meningitis vaccine for adolescents and college freshmen. The vaccine, sold as Menactra by Sanofi Pasteur, protects against infections caused by meningococcal bacteria. Such infections include a form of meningitis that can be rapidly fatal. For the first time, the diseases center, a federal agency in Atlanta, recommended that all 11- and 12-year-olds be routinely immunized against meningococcal disease. The agency also recommended using Menactra to protect high school freshmen or children younger than 15, whichever comes earlier.