Diphtheria; cases and contacts:  is it necessary to take cultures from both nose and throat?
D035843:Biomedical Research; D004165:Diphtheria / Q000517:prevention & control*; D006801:Humans; D009333:Neck; D009666:Nose; D010614:Pharynx; D013194:Staining and Labeling
DIPHTHERIA/prevention and control