Clinical Trial: A Clinical Study on Immunogenicity Persistence of Adsorbed 5-component Acellular Pertussis, Diphtheria and Tetanus Combined Vaccine

U.S., Aug. 5 -- ClinicalTrials.gov registry received information related to the study (NCT07744347) titled 'A Clinical Study on Immunogenicity Persistence of Adsorbed 5-component Acellular Pertussis, Diphtheria and Tetanus Combined Vaccine' on July 30.

Brief Summary: This clinical trial will enroll 160 participants who previously took part in the Phase I clinical trial of the adsorbed acellular pentavalent (five-component) DTP-polio combination vaccine (for individuals aged 6 years and older) (Protocol No.: CTP-Tdcp-001). Approximately 3-4 mL of venous blood will be collected from each participant 2.5 years, 5 years, and 10 years after vaccination for a study on immune persistence.

Study Start Date: Oct. 15

Study Type: OBSERVATIONAL

Con...