Active clinical trials for "Meningococcal Infections"

The purpose of this study is to evaluate the immunogenicity, safety and tolerability of rMenB+OMV NZ and MenACWY vaccines when concomitantly administered to healthy subjects 16-18 years of age.

Phase I study to evaluate safety and immunogenicity in healthy adult subjects following a single dose administration of Meningococcal (Group A, C, W-135, X, and Y)-CRM197 Conjugate vaccine

An unusual increase in cases of invasive meningococcal infection between late 2022 and early 2023. These cases sometimes had atypical presentations (large numbers of bacteremias without meningitis). The distribution of serogroups was also unusual in our center (large number of serotype Y meningococcal IMD). This development comes after three years marked by the Corona-Virus-Disease-19 pandemic, which led to a profound change in the behaviors involved in the transmission of infectious diseases. Barrier measures have considerably reduced the population's exposure to meningococcus, and may have encouraged a reduction in mucosal immunity to this pathogen. The end of 2022 was also marked by intense viral circulation (syncitial respiratory virus-influenza-COVID), which may have favored invasive forms.

Active metropolitan area surveillance for hospital admissions related to invasive infection with Neisseria meningitidis will be conducted at the 12 centers in the IMPACT network in collaboration with Public Health officials, local infection specialists and infection control practitioners during the interval from January 1, 2016 to December 31, 2022.

The purpose of this study is to evaluate that the vaccine produced with the new process and administered as a single dose is at least as good as the existing Mencevax™ ACWY vaccine in terms of immunogenicity, safety and reactogenicity, in healthy subjects aged 2-30 years.

A two-phases study will be carried out with the following aims st phase (2018-2020) To investigate the vaccination coverage for Rotavirus vaccine (RV) in Campania Region together with other pediatric vaccinations scheduled in the first 12 months of life: hexavalent, pneumococcal conjugate (PCV), meningococcal B (MenB) To collect data on appropriate timing of the 3 doses of human bovine pentavalent reassortant vaccine (RV5) administration To evaluate the frequency of a co-administration of RV5 with other vaccines scheduled in the first 12 months of life (hexavalent/PCV+RV5, MenB+RV5 vs RV5 alone) and assess the variability in co-administration rates according to RV5 dose nd phase (2020-2022) To investigate the effect of Coronavirus-Disease-19 (COVID-19) pandemic on vaccination coverage in the first year of life, focusing on RV vaccination To investigate the effect of COVID-19 pandemic on timing of vaccine administration in the first year of life, focusing on those vaccines without catch-up vaccination schedule (i.e. RV) Hypothesis are the following: Vaccination coverage and timing of vaccines scheduled in the first year of life are not fully aligned with what is established by the Italian National Prevention Plan 2017-2019 Co-administration of RV5 and MenB in comparison with other coadministration e.g. hexavalent/PCV is lower Co-administration of RV5 and MenB allows to ensure appropriate timing of RV vaccination schedule COVID-19 pandemic may have affected the overall vaccination coverage as well as the timing of selected vaccination scheduled in the first year of life, with a more relevant impact on vaccines for whom a catch-up vaccination schedule is not feasible, such as RV immunization.

The aim of this study is to provide information on the persistence of bactericidal antibodies following Menactra booster vaccination in study MTA77 ( NCT01442675). Objective: To evaluate the persistence of antibody responses (determined by a serum bactericidal assay using human complement (SBA-HC)) approximately 4 years after the administration of a booster dose of Menactra vaccine in trial MTA77

In the UK, babies receive their vaccinations according to a standard schedule, irrespective of their gestation at birth. This policy is designed so that all babies are protected as early as possible from vaccine preventable diseases such as polio, diphtheria, tetanus, rotavirus, pertussis (whooping cough), Haemophilus influenzae type B, pneumococcal disease and now meningococcal B disease. The 4CMenB vaccination (Bexsero®) was added to the UK schedule in September 2015 and there has been no research looking at whether the vaccine gives the same protection to babies born early as it does to those born at term. The Investigators want to compare two different schedules of 4CMenB and see if one gives better protection to babies born prematurely. It is possible that an extra 4CMenB dose (i.e. three doses in early infancy instead of two) will offer better protection for premature babies. This is what the Investigators are trying to find out through this study.

This was an open-label, multi-center study to describe the immune persistence of the priming dose and describe the immunogenicity and safety of a booster dose of Meningococcal Polysaccharide (Serogroups A, C, Y, and W) Tetanus Toxoid (MenACYW) conjugate vaccine in children in Finland who had been vaccinated 3 years earlier as toddlers with either MenACYW conjugate vaccine or Nimenrix® as part of the MET54 study (NCT03205358). The objectives were: To describe the antibody persistence of meningococcal serogroups A, C, Y, and W before a booster dose in children who received either MenACYW conjugate vaccine or Nimenrix® 3 years earlier as toddlers. To describe the antibody responses to meningococcal serogroups A, C, Y, and W 30 days after a booster dose of MenACYW conjugate vaccine in children who received either MenACYW conjugate vaccine or Nimenrix® 3 years earlier as toddlers. To describe the antibody responses against tetanus toxoid 30 days after a booster dose of MenACYW conjugate vaccine in children who received either MenACYW conjugate vaccine or Nimenrix® 3 years earlier as toddlers. To describe the safety profile of a booster dose of MenACYW conjugate vaccine in children who received either MenACYW conjugate vaccine or Nimenrix® 3 years earlier as toddlers.

Phase I study to evaluate safety and immunogenicity in healthy adult subjects following a single dose administration of Meningococcal (Group A, C, W-135, and Y)-CRM197 Conjugate vaccine