Immunization of children against whooping-cough with pertussis haemagglutinin (H.A.P.A.):  field results over three years.
D035843:Biomedical Research; D002648:Child; D003371:Cough; D006388:Hemagglutinins; D006801:Humans; D007114:Immunization; D014611:Vaccination; D014612:Vaccines; D014917:Whooping Cough / Q000517:prevention & control*
D006388:Hemagglutinins; D014612:Vaccines
VACCINES AND VACCINATION; WHOOPING COUGH/prevention and control