View clinical trials related to Meningococcemia.
Filter by:Objectives: Meningococcal disease (MD) is a complex catastrophic phenomenon that can converge rapidly to irreversible septic shock, myocardial dysfunction, and profound coagulopathy. During meningococcal sepsis and meningitis, a myriad of cells release cytokines within the intravascular environment and subarachnoid space. Cytokines are key molecular messengers that play key roles in orchestrating and mediating the metabolic, endocrine and coagulation responses to meningococcal infection. The aim of the present study is to determine the profile of different cytokines in serum and cerebrospinal fluid during MD, as well as relate the level of these cytokines to severity of MD. Design: Prospective, nonrandomized study. Setting: Tertiary referral intensive care unit. Patients: Children and adults admitted with a clinical diagnosis of MD. Interventions: Blood and cerebrospinal fluid will sample from children and adults with MD.
This study was designed to evaluate the antibody response to a Menactra® booster dose in participants who previously received one dose of Menactra® or Menomune® as adolescents 3 years earlier in Study MTA02. Primary Objective: To evaluate the antibody responses to a booster dose of a tetravalent meningococcal diphtheria toxoid conjugate vaccine (Menactra®) in participants who had previously received Menactra® or Menomune® as adolescents in the MTA02 Study and antibody responses to a dose of Menactra® in naive adolescents.
The purpose of this study was to evaluate the immunogenicity and safety of the concomitant administration of Menactra® vaccine and Tdap vaccine in adolescents aged 11 to 17 years. Primary Objective: To determine whether concomitant administration of two vaccines, Tdap and Menactra®, induces antibody responses that are similar to those observed when each vaccine is given separately. Secondary Objective: To compare the rates of injection site reactions at the Tdap injection site after Tdap and Menactra® vaccines are administered concomitantly to the corresponding rates of reactions when Tdap vaccine is administered alone.
This study was designed to generate data for the assessment of Meningococcal Polysaccharide Diphtheria Toxoid Conjugate vaccine (Menactra®) when given to adults aged 18 to 55 years. Primary Objective: To describe the antibody response to each serogroup prior to, and 4 to 6 weeks following, the administration of one dose of the investigational Meningococcal Polysaccharide Diphtheria Toxoid Conjugate vaccine (Menactra®), as measured by serum bactericidal activity using baby rabbit complement (SBA BR) in participants in each of the two study groups. Secondary Objective: To collect reference sera for the development and refinement of laboratory assays for the measurement of antibody responses to serogroups Y and W 135.
This study was designed to simulate meningococcal challenge by vaccination with a fractional combined dose of unconjugated meningococcal polysaccharides A, C, Y, and W-135, Menomune® in children who were vaccinated with one dose of TetraMenD at least 18 months earlier. Primary Objective: To evaluate and compare the antibody responses to a reduced dose of Menomune® in participants who had previously received a tetravalent meningococcal diphtheria toxoid conjugate vaccine to those responses in participants who received the same reduced dose of Menomune® but had not previously received any meningococcal vaccine.
The study investigated safety profile and the antibody responses to an experimental tetravalent meningococcal diphtheria conjugate vaccine (Menactra®) in children who have received a monovalent meningococcal C conjugate vaccine at least one year previously. Primary objective: To describe and compare the Serum Bactericidal Assay (SBA) antibody response for serogroup C in participants receiving Menactra® to the serogroup C antibody response in a control group of participants receiving a licensed Haemophilus Influenzae Type b (Hib) conjugate vaccine 28 days following vaccination.
Study will evaluate the persistence of antibodies approximately three years after an initial dose of Menactra® vaccine in toddlers who participated in study MTA26 (NCT00643916) and age-matched Menactra naive participants. Objectives: - To assess the persistence of antibody responses three years after one or two doses of Menactra® vaccine in subjects who participated in study MTA26. - To describe the antibody responses to a single dose of Menactra® vaccine in subjects who had previously received one or two doses of Menactra® vaccine and in Menactra® vaccine-naïve subjects. - To describe the safety profile of a single dose of Menactra® vaccine in subjects.
This study will be conducted among children in Saudi Arabia who previously received two doses of A, C, Y, W-135 polysaccharide vaccine before the age of 2 years, and in meningococcal vaccine-naïve children (Control Group). This study will evaluate the administration of Menactra® in terms of the serum bactericidal antibody it induces in the two study groups. Safety of Menactra® vaccine will be described.