Since emergence and wide dissemination in the civilian population of sulfadiazine-resistant strains of Group B Neisseria meningitidis, all military recruit training centers in the United States have had some experience with disease caused by those organisms. In comparison to other centers for basic military training, however, Lackland Air Force Base, located near San Antonio, Tex, has been minimally afflicted. No cases of meningococcal meningitis due to Group B organisms occurred in recruits at Lackland in 1962, 1963, or 1964. During that time meningitis had caused the input of recruits to be suspended temporarily at the San Diego Naval Training Center,1 where the problem of sulfadiazine-resistant meningococci was first recognized,2 and at Fort Ord, the US Army facility near Monterey, Calif.3,4 The disease caused great concern in other military training centers in 1964.
Possible explanations for the prolonged absence of clinical cases of Group B meningococcal infection in
Farrell DG, Dahl EV. Nasopharyngeal Carriers of Neisseria meningitidisStudies Among Air Force Recruits. JAMA. 1966;198(11):1189–1192. doi:10.1001/jama.1966.03110240097034