Increased incidence and death rate in diphtheria and pertussis.
D035843:Biomedical Research; D004165:Diphtheria / Q000517:prevention & control*; D006801:Humans; D015994:Incidence; D014917:Whooping Cough / Q000517:prevention & control*
DIPHTHERIA/prevention and control; WHOOPING COUGH/prevention and control