title: Diphtheria acquired during a cruise in the Baltic Sea.
mesh_terms: D000368:Aged; D001454:Baltic States / Q000453:epidemiology; D003353:Corynebacterium diphtheriae / Q000302:isolation & purification; D004165:Diphtheria / Q000453:epidemiology* / Q000209:etiology / Q000517:prevention & control; D005260:Female; D006801:Humans; D007114:Immunization; D014195:Travel