| safety and immunogenicity of a diphtheria, tetanus, acellular pertussis and haemophilus influenzae type b combination vaccine compared with separate administration of licensed equivalent vaccines in chinese infants and toddlers for primary and booster immunization. | to evaluate the safety and immunogenicity of a diphtheria, tetanus, acellular pertussis and haemophilus infuenzae type b (dtap/hib) combination vaccine first developed by a chinese manufacturer, a randomized, two-stage, parallel controlled, single center clinical trial was conducted in dafeng, jiangsu province of china. a total of 720 infants were enrolled and randomly assigned to two groups with a 2:1 allocation. in stage i, 480 subjects in group t were administered with 3 doses of the dtap/hib ... | 2010 | 20399240 |