[Were the meningococcal vaccination campaigns in 1974-76 of benefit?].
D000293:Adolescent; D002648:Child; D002675:Child, Preschool; D004196:Disease Outbreaks / Q000453:epidemiology; D005387:Finland; D005500:Follow-Up Studies; D006801:Humans; D007109:Immunity; D007223:Infant; D007231:Infant, Newborn; D008589:Meningococcal Infections / Q000453:epidemiology / Q000276:immunology* / Q000517:prevention & control; D014611:Vaccination
Oliko vuosien 1974-76 meningokokkirokotuksista hyötyä?