1. Diphtheria outbreaks in immunized populations;Karzon, D.T.; Edwards, K.M.;NEnglJtMed,1988
2. Diphtheria outbreak: Russian Federation, 1990-1993;A'IMWR,1993
3. the continuing hazard;Bowler, I.C.J.; Mandal, B.K.; Schlecht, B.; Diphtheria, Riorden T.;Arch Dis Child,1988
4. Fatal respiratory disease due to Corynebacterium diphtheria: case report and review of guidelines for management, investigation and control;Farizo, K.M.; Strebel, P.M.; Chen, R.T.; Kimbler, A.; Cleary, T.J.; Cochi, S.L.;Clin Infect Dis,1993
5. Absence of protective immunity against diphtheria in a large proportion of young adults;Rappouli, R.; Podda, A.; Giovannoni, F.; Nencioni, L.; Peragallo, M.; Francolini, P.;Vaccine,1993