View clinical trials related to Pertussis.
Filter by:The main objective is to estimate the annual symptomatic incidence of Bordetella pertussis and RSV infections in patients aged 18 years and over with asthma, which will be identified by PCR, for Bordetella pertussis and by PCR for RSV performed at a specific timepoint from onset of symptoms for each symptomatic Acute Respiratory Infection (ARI). A multicentre prospective cohort study will be undertaken in Spain. Thirty-five centres from different autonomous communities in Spain will participate in the study. Participants will be asked to report to the investigator if they experience an asthma exacerbation or symptoms of acute respiratory infection with 2 years follow up
This study is a randomized, blinded, active-controlled phase I clinical trial to evaluate the safety and preliminary immunogenicity of the Diphtheria-Tetanus-acellular Pertussis Component Combined Vaccine (DTacP) in subjects (aged 2 months to 6 years). Primary safety endpoints are the occurrence of solicited adverse events within 30 minutes after each dose, the occurrence of solicited adverse events within 7 days after each dose, the occurrence of unsolicited adverse events within 30 days after each dose, and the occurrence of adverse events 30 days after immunization. The secondary safety endpoint is the occurrence of serious adverse events (SAEs) within 12 months after immunization. Secondary immunogenicity endpoints are the geometric mean concentration (GMC), geometric mean fold increase (GMFI), seropositive rates, seroconversion rates, or 4-fold increase rates of anti-DT, anti-TT, anti-PT, anti-FHA, and anti-PRN antibodies 30 days after immunization. The exploratory endpoints are the GMC, GMFI, seropositive rates, seroconversion rates, or 4-fold increase rates of anti-DT, anti-PT, and anti-FHA neutralizing antibodies 30 days after immunization in all groups, the GMC and seropositive rates of anti-DT, anti-TT, anti-PT, anti-FHA, and anti-PRN antibodies 12 months after primary immunization in the infant group, the seropositive rates and geometric mean tie (GMT) of anti- type I, type II, type III poliovirus neutralizing antibodies 30 days after immunization in all groups, the seropositive rates and geometric mean tie (GMT) of anti- type I, type II, type III poliovirus neutralizing antibodies 12 months after primary immunization in the infant group.
In France, it has been recommended since 2022 that pregnant women be vaccinated against pertussis from 20 to 36 weeks' gestation. This vaccination schedule is inspired by the Anglo-Saxon model and studies showing the effectiveness of this practice. The aim of this vaccine is to protect the newborn by transferring antibodies from the fetus to the placenta, because Pertussis is a particularly serious disease in newborns.
Pertussis is an acute respiratory infectious disease caused by Bordetella pertussis, diphtheria is an acute upper respiratory infectious disease caused by Gram-positive Corynebacterium diphtheriae, and tetanus is a highly fatal disease caused by Clostridium tetani infection. Currently, there is no clinical trial registration of Diphtheria, tetanus, and pertussis (DPT) vaccine applicable to ≥6 years of age in China, therefore, the five-component acellular DPT combination vaccine developed by our research has a promising future.
This is a single-center, randomized, active-controlled, parallel-design, double-blind, phase I study to evaluate the safety and immunogenicity of a single dose of APV006 in healthy adults.
The overall objective of the project is to identify the determinants of antibody-mediated immunity in infants born to mothers immunized during pregnancy. Using maternal pertussis immunization as a model, the project will identify key predictors and potential determinants of vaccine responses in pregnant women, of the transfer of maternal antibodies to the newborn and of vaccine responses in infants. A systems biology approach will be used to delineate pre-vaccination and post-vaccination cellular and molecular correlates of the immune response to pertussis immunization in peripheral blood and in breastmilk.
The purpose of this study is to evaluate immunogenicity and safety of different doses of candidate hexavalent vaccine in comparison to co-administration of Pentavalent vaccine and Poliomyelitis Vaccine (Inactivated) in separate injections at four weeks after completion of three-dose primary series at 6-10-14 weeks of age when administered to healthy infants and thereby to select the optimal dose of candidate vaccine(Stage 1) and to demonstrate lot-to-lot consistency of three lots of LBVD (Stage 2)
A significant increase of pertussis incidence is reported in a growing number of countries. This resurgence is considered as resulting from the limited durability of aP-vaccine-induced immunity and is associated with increased mortality in young infants and morbidity at all age groups. As the pertussis immunity acquired through immunization or infection is short-lived, its maintenance or reactivation requires repeat boosting at regular time points. Thus, novel strategies capable of reactivating pertussis immunity are needed. The efficacy of current acellular pertussis vaccines (which contain chemically-detoxified pertussis toxoid (PT)) rapidly wanes, in part because priming and repeat immunization with acellular vaccines induce antibodies specific for the chemically-detoxified PT but unable to efficiently recognize the native PT expressed by B. pertussis. Clinical studies have shown the superior immunogenicity profile of acellular pertussis vaccines including genetically-detoxified PT (rPT) in adults and adolescents previously primed with aP. In particular, the investigators showed in a past Geneva study in teenagers previously primed with aP that rPT/FHA induced a stronger recall response than the current aP-vaccine at one month post-vaccination. However, the difference was less clear one year after vaccination, suggesting that 2 doses may be needed for more sustained immunity. In the present study, the investigators would like to assess whether giving two doses of rPT/FHA at 6 months interval induces stronger immune responses than a single dose.
This study aims to establish a Controlled Human Infection Model of Bordetella pertussis by determining a reproducible and safe infectious bacterial dose (challenge inoculum) that achieves colonization and mild symptomatic infection in healthy adults.
This is a phase 1 study to evaluate the safety and immunogenicity of the semisynthetic saponin adjuvant TQL1055 administered in combination with an acellular pertussis vaccine.