View clinical trials related to Meningococcal Infections.
Filter by: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 serum bactericidal assay using human complement [SBA-HC]) approximately 4 years after the administration of a booster dose of Menactra vaccine in trial MTA77
The aim of this study was to collect further information regarding an increase immune response of SP284 after an additional dose in Japanese participants. Primary Objective: - To evaluate and describe the immune responses to meningococcal antigens (serogroups A,C, Y and W-135) at 28 days following each vaccination with SP284 vaccine in participants 20 through 55 years of age. Other Pre-specified objective: - To describe the safety in terms of immediate systemic adverse events (AEs), solicited reactions, unsolicited non-serious adverse events, and serious adverse events (SAEs) following receipt of each dose of SP284 vaccine in persons 20 through 55 years of age.
This study will investigate the breadth of protection against meningococcal disease in humans immunized with a newly FDA approved meningococcal B vaccine, trade name "Trumenba®" manufactured by Pfizer Vaccines. As a secondary goal the investigators will investigate underlying mechanisms by which human anti-FHbp antibodies elicit complement-mediated bactericidal activity.
This study is looking at a new vaccine that might prevent meningococcal disease, and will study the immune response elicited by this vaccine when given to healthy young children. The study will also look at the safety of the new vaccine as well as how it is tolerated.
To determine the persistence of protective antibody levels for subjects who seroconverted after vaccination with NmVac4-A/C/Y/W-135-DT™ Participants in trial # JN-NM-002, who seroconverted for serogroups A and C will be contacted and asked to provide a blood sample at 12-24 months after vaccination with NmVac4-A/C/Y/W-135-DT. Serum Bactericidal Assays will be performed to evaluated duration of protective antibody titer for NmVac4-A/C/Y/W-135-DT for all four serogroups. To determine if subjects who seroconverted with lower titers retain protective levels of antibody (titer ≥:8) at 12-24 months after vaccination.
The purpose of this study is to evaluate persistence of bactericidal antibodies for N. meningitidis serogroups A, C, W, and Y and serogroup B test strains approximately 4 years after primary vaccination in subjects who previously received a 2-dose series of MenABCWY+Outer membrane Vesicles (OMV) or a single dose of MenACWY, to evaluate immune response against N. meningitidis serogroups A, C, W and Y and serogroup B test strains 30 days after a dose of MenABCWY+OMV in previously vaccinated subjects, and 30 days after a 2-dose series in vaccine-naive subjects of similar age, to evaluate kinetics of immune response at 3, 7, and 30 days after a booster dose of MenABCWY+OMV in previously vaccinated subjects and to explore differences in the kinetics of immune response 3, 7 and 30 days after an accelerated 2 dose series of MenABCWY+OMV separated by 30 days given to vaccine-naive subjects, and to assess immunogenicity of 2 doses of MenABCWY+OMV at Day 61 in vaccine-naive subjects and subjects who previously received one dose of MenACWY
The purpose/aim of this study is to assess 1) the long-term persistence (4 to 7.5 years after the last dose) of bactericidal activity following primary vaccination with rMenB+OMV NZ in adolescents [who previously participated in parent studies V72_41 (NCT0142384) and V72P10 (NCT00661713)] and 2) the kinetics of immune response following booster vaccination with rMenB+OMV NZ
This is Phase IV, Open label, Multicenter study. Subject's parents and/or legal guardian will be provided information about the trial. If interested and if eligible, they will then be asked to provide signed informed consent. The initial study visit can occur immediately after signed informed consent has been obtained. Approximately 135 subjects will be enrolled to receive 4 doses of intramuscular MenACWY vaccine at 2, 4, 6 and 12 months of age.
This study will be an open label, exploratory immunogenicity study conducted by the Oxford Vaccine Group, University of Oxford. This study will investigate the breadth of protective activity of serum anti-FHbp antibody responses of adults immunized with 4CMenB (Bexsero®) vaccine as well as investigating the nature of the B-cell and T-cell responses induced by vaccination. The investigators aim to enroll 15 to 20 healthy adults aged 18 to 60, who will be immunized with two doses of 4CMenB (Bexsero®) two months apart according to the licensed schedule. Blood samples will be obtained at baseline and after each dose of vaccine.
This safety surveillance study of GlaxoSmithKline's quadrivalent meningococcal ACWY conjugate vaccine (Meningococcal quadrivalent CRM-197) among children 2 months through 23 months of age is a post-marketing study required by the United States Food and Drug Administration. It is an observational study of children 2-23 months of age who receive at least one dose of MenACWY-CRM vaccine at a Kaiser Permanente Southern California facility (KPSC) while enrolled as a KPSC health plan member. The objective of the infant study is to describe medical events that require emergency room visit or hospitalization in 6 months following MenACWY-CRM vaccination in children 2-23 months of age in a health maintenance organization in the United States. Outcomes include medical events that require emergency room visits or hospitalizations in children 2-23 months of age following any dose of MenACWY-CRM vaccination. Events with a history of the same diagnosis prior to the first dose of MenACWY-CRM vaccination will be excluded as a pre-existing condition.