Active clinical trials for "Diphtheria"

To compare the seroprotection rates and booster responses to Canadian-manufactured Tetanus and Diphtheria Toxoids Adsorbed vaccine to the seroprotection rates and booster responses to the US-manufactured Tetanus and Diphtheria Toxoids Adsorbed vaccine when administered to subjects ≥ 60 years of age. To compare the post-vaccination geometric mean titers of antibody (GMTs) to Canadian manufactured Tetanus and Diphtheria Toxoids Adsorbed vaccine to the post-vaccination GMTs to the US manufactured Tetanus and Diphtheria Toxoids Adsorbed vaccine when administered to subjects ≥ 60 years of age.

The purpose of this study is to assess the efficacy and safety of repeating dTpa booster in adults 10 years after previous booster vaccination with dTpa in a prior clinical study. Only subjects who received booster vaccination in the previous clinical study are eligible for participation in this study.

This is a follow-up of Study A3L11 (NCT00404651). Immunogenicity To describe the antibody persistence following a primary series vaccination of either DTaP-IPV-Hep B-PRP~T or Infanrix hexa™. To describe the immunogenicity of a booster dose of DTaP-IPV-HepB-PRP~T in a subset of subjects. Safety - To describe the safety profile after a booster dose of DTacP-IPV-HepB-PRP~T.

The study aims to confirm that, in Peruvian infants, the investigational DTaP-IPV Hep B-PRP~T vaccine has immunological and safety profiles that are comparable to those of the control vaccine that is already marketed (Infanrix®Hexa) Primary Objective: To demonstrate that the hexavalent DTaP-IPV-Hep B-PRP~T combined vaccine induces an immune response that is at least as good as the response following Infanrix®Hexa in terms of seroprotection rates to HB, one month after a three-dose primary series (2, 4 and 6 months) Secondary Objectives: To describe in each group the immunogenicity to vaccine components (for DTaP-IPV-Hep B-PRP~T and Infanrix®Hexa) one month after the third dose of the primary series. To assess the overall safety in each group one month after each dose of the primary series and through the entire study.

This purpose of the study is to evaluate the immunogenicity and reactogenicity of Boostrix™ (when used in a primary schedule (0, 1, 6-month) or a single dose of Boostrix-IPV followed by two doses of Td vaccines (DitanrixTM Adult, TedivaxTM), as compared to three doses of licensed Td vaccines in adults.

This study is designed to evaluate the safety and immunogenicity of Infanrix™-IPV+Hib vaccine when administered as a primary vaccination course to healthy Korean infants at 2, 4 and 6 months of age.

In this study, infants who were previously vaccinated with hepatitis B vaccine at birth will be randomly allocated into two groups: one group of subjects will receive diphtheria, tetanus, acellular pertussis- hepatitis B virus-inactivated poliovirus/Haemophilus influenzae type b (DTPa-HBV-IPV/Hib) vaccine at 6-10-14 weeks of age the second group of subjects will receive DTPa-HBV-IPV/Hib vaccine at 2-4-6 months of age

The purpose of the study is to demonstrate consistent results in 3 production lots of Hib-MenAC vaccine when extemporaneously mixed with Tritanrix™-HepB and administered as a single injection, with respect to immunogenicity, safety and reactogenicity. Tritanrix™-HepB/Hiberix™ given alone and Wyeth Lederle's meningococcal C conjugate vaccine (Meningitec™), given concomitantly with Tritanrix™-HepB/Hiberix™ will be used as benchmark vaccines for all antigens except for MenA. The immunogenicity of MenA will also be evaluated.

The purpose of the study is as follows: To evaluate the persistence of antibodies and the presence of immune memory induced by a 3-dose primary vaccination with Tritanrix™-HepB/Hib-MenAC (three formulations) in the study DTPwHB/HibMenACTT001 (CPMS No. 759346/001) by giving unconjugated PRP, PSA and PSC at 10 months age to one subset of subjects. To evaluate the persistence of all antibodies pertaining to primary vaccination and the booster response to Tritanrix™-HepB/Hib2.5 vaccine or Tritanrix™-HepB/Hib-MenAC vaccine at 15-18 months age in the other subset of subjects.

To demonstrate that DTaP-IPV-HB-PRP~T combined vaccine does not induce a higher incidence rate of high fever than Tritanrix-HepB/Hib™ and Oral Polio Vaccine (OPV) after any of the three vaccinations at 2, 4, and 6 months of age for each subject. To evaluate the overall safety in terms of: Any solicited adverse reactions in the first 7 days after each injection, Any adverse events and reactions in the first 30 days after each injection, Any serious adverse events during the trial. Immunogenicity: To document the immune response to Hepatitis B antigen of the three batches of the investigational DTaP-IPV-HB-PRP~T vaccine.