Immunogenicity and safety of co-purified diphtheria, tetanus and acellular pertussis vaccine in 6-year-old Chinese children

In this phase 4 trial, the authors compare the immunogenicity and safety of co-purified diphtheria, tetanus, and acellular pertussis combined vaccine (co-purified DTaP) to diphtheria and tetanus combined vaccine (DT) in 6-year-old Chinese children.