View clinical trials related to Pertussis.
Filter by:The trial includes groups receiving various combinations of meningitis C and pertussis containing vaccines, to be administered concomitantly in adolescents due their school leaving booster vaccinations (as per UK routine immunisation schedule at 13-17 years of age). Immunogenicity and reactogenicity will be assessed.
Young infants are most vulnerable to severe disease and even death when infected with Bordetella Pertussis. The current vaccines and vaccination programs do not guarantee protection of neonates. During the last weeks of pregnancy, maternal IgG antibodies are transferred actively to the fetus. Administration of a pertussis containing vaccine during pregnancy offers protection through high titers of maternal antibodies transferred to the child. Since transplacental transport is immature, infants who are born prior to 37 weeks of gestation, might be vulnerable to pertussis infection even though maternal vaccination was administered, but specific data are lacking. The primary aim of this observational study is to measure whether vaccination during pregnancy offers protection to preterm born infants through higher titers of maternal antibodies, despite immature transplacental transport. Four cohorts of mother-infant pairs will be recruited: term versus preterm born infants, born from either vaccinated women or not vaccinated women. These mother-infant pairs are recruited according to the vaccination status of the mother and to the gestational age at delivery. Pertussis specific antibody titers (anti-Pertussis Toxin, anti-Filamentous haemagglutinin, anti-Pertactin titers) will be monitored in blood samples of the mothers at delivery to measure the possible influence of both gestational age and maternal vaccination status. In order to measure the decline of maternal antibodies in the first weeks of life, blood will be taken from cords as well as from infants at 8 weeks of age, before the first infant pertussis vaccine is administered. Pertussis antibodies to the same antigens will be measured in all infants after a primary series of acellular pertussis vaccines administered at 8,12 and 16 weeks of age and before and after a booster dose in the second year of life. In addition, cellular mediated immune responses will be evaluated in a subgroup of infants before and after a primary series of infants vaccines. A last goal is to measure whether vaccination during pregnancy could offer additional maternal antibodies through breast milk. Again a comparison is made between preterm and term born infants, born from either vaccinated or unvaccinated women. The amount of lactoferrin and pertussis toxin specific IgA in breast milk samples will be measured in samples taken at birth (colostrum), and at several time points afterwards as long as breastfeeding is continued.
Pertussis, diphtheria and tetanus are seriously infectious diseases in children. Since using of the adsorption diphtheria-tetanus-whole-cell pertussis (DTwP), it greatly reduced incidence of the three kinds of diseases. But the thallus of pertussis in the vaccine may cause more side reactions after vaccination. Since 2000, the basic immunization DTwP vaccine has been replaced by adsorption tetanus-diphtheria-acellular pertussis vaccine in American. In 1995, DTaP was successfully developed in China, and have been used in EPI at present. Because of effective immunity and little side reaction, DTaP has been widely recognized and accepted by the parents.
The objective of this study is to assess the immunogenicity and safety of the DTaP-IPV combination vaccine compared with those of separate DTaP and IPV vaccines administered to healthy infants at 2, 4, and 6 months of age.
This study evaluates the safety and immunogenicity of a higher dose formulation of a new live attenuated vaccine, BPZE1, intended to prevent Bordetella pertussis nasopharyngeal colonization and pertussis disease, and investigates whether higher doses of BPZE1 induce the live vaccine to colonize subjects' nasopharynx. The study is a Phase Ib (high dose), single centre, dose-escalating, placebo-controlled study of the live attenuated B. pertussis strain BPZE1 given as a single intranasal dose to healthy adult volunteer.
The purpose of this study is to describe the immunogenicity and safety of Sanofi Pasteur's DTaP-IPV-Hep B-PRP-T fully liquid combined hexavalent vaccine (Hexaxim®) administered at 2, 3, and 4 months of age and at 16 to 17 months of age in infants and toddlers who received a dose of Hep B vaccine at birth or within 1 week after birth. Primary Objective: - To describe the safety profile after each and all doses of Sanofi-Pasteur's DTaP-IPV-Hep B-PRP-T combined vaccine in Vietnamese infants and toddlers. Secondary Objective: - To demonstrate the non-inferiority of the immune response to all antigens induced by the study vaccine in Vietnamese infants one month after the third dose in a 3-dose primary series with the immune response to all antigens induced by the same study vaccine outside Vietnam. - To evaluate the immunogenicity of the study vaccine one month after the 3-dose primary series. - To describe the persistence of all antibodies before receipt of the booster vaccination. - To evaluate the immunogenicity of the study vaccine one month after the booster.
Young infants are most vulnerable to severe disease and even death when infected with Bordetella pertussis. The current vaccines and vaccination programs do not guarantee protection of neonates from this disease. Maternal acquired pertussis-specific antibodies show low concentrations with short persistence in newborns creating a susceptibility gap for infection between birth and the first vaccinations. A possible strategy to protect infants from birth is pertussis vaccination during pregnancy, which will increase the amount of passively transferred maternal antibodies. However, little is known regarding the effect of high titers of maternal antibodies on the infants immune responses to different pertussis vaccines (whole cell versus acellular). Humoral immune responses will be assessed in infants receiving whole cell versus infants receiving acellular pertussis vaccines. Functionality of the antibodies will also be analyzed.
The purpose of this study is to evaluate the persistence of immune response against the three pertussis antigens (anti- pertussis toxoid (PT), anti-filamentous hemagglutinin (FHA) and anti-pertactin (PRN)) in subjects who received a booster dose of either aP or Tdap study vaccines or Boostrix® during V113_01 study. There was only one Clinic Visit at day 1. Eligible subjects went undergo a single blood draw after which they were observed for approximately 15 minutes. Approximately 10.0 mL of blood was withdrawn. No vaccine was administered and no safety data was collected in this study.
Maternal immunization with tetanus toxoid, reduced diphtheria toxoid, and acellular pertussis vaccine (Tdap) is a potential strategy to protect young infants against pertussis before they are fully vaccinated because maternal antibodies may cross the placenta and passively protect her infant. The proposed study is a randomized, blinded, controlled, vaccine trial of maternal Tdap vaccination during the third trimester of pregnancy (Tdap vaccination at 27-36 weeks gestation). Pregnant women will be recruited from the prenatal care clinics at the Hospital Nacional Occidente and the Health Centers in Quetzaltenango, La Esperanza, San Juan Ostuncalco and Concepción Chiquirichapa. Enrolled women and their infants will be followed up until 7 months post-partum.
Primary objective: - To demonstrate the non-inferiority in terms of seroprotection rates (Hib antigen (PRP), Diphtheria, Tetanus, and Pertussis antigens (PT and FHA), and polio types 1, 2 and 3 antigens) of investigational arm (Group A: DTaP-IPV/Hib) versus control arm (Group B: DTaP-IPV and Hib vaccines administered at separate sites), one month after the primary vaccination (all antigens). Secondary objectives: - To describe immune responses against all vaccine antigens with no pre-specified hypothesis, and at all time points (pre-dose 1, post-dose 3, pre-dose 4 and post-dose 4) in the two study groups (Group A and Group B). - To describe the safety after each dose of each vaccine in the two study groups (Group A and Group B). - To describe immune responses against all vaccine antigens with no pre-specified hypothesis, and at all time points (pre-dose 1, post-dose 3, pre-dose 4 and post-dose 4 (Group C)