Immunogenicity and safety of a single intramuscular dose of a diphtheria-tetanus toxoid (Td) vaccine (GC1107) in Korean adults

► Immunogenicity and safety of a single intramuscular dose of a newly developed diphtheria-tetanus toxoid (Td) vaccine (GC1107) was evaluated. ► GC1107 was well tolerated. ► GC1107 provided significant boosts of anti-tetanus and anti-diphtheria antibodies.