View clinical trials related to Pneumococcal Infections.
Filter by:Vaccination is the most effective way of preventing infectious diseases. Despite the success of vaccines in general, vaccines induce diminished antibody responses and lower protection in the elderly in particular. This could be explained by a defect in the early responses of an ageing immune system. A better understanding of the basic immunological mechanisms that mediate vaccine efficacy is incomplete. Such information is critical and could greatly decrease both the cost and the time to new vaccine development particularly for the geriatric population. In this trial, the investigators will study the immunologic differences of two FDA approved licensed pneumococcal vaccines between a younger and an older group. Twenty two healthy volunteers between the age of 25-40 and sixty six healthy volunteers between the ages of 60-89 will be enrolled in the study. Each participant in the study will be given one pneumococcal shot. Blood work will be obtained prior to vaccination, one day, three days, seven days, fourteen days, as well as one month and six months after vaccination. Throughout the duration of the study, the participants will be monitored for safety.
In 2005, Wyeth conducted study 0887X-101518 (NCT00488826) in which Chinese infants received either Prevenar alone (Group 1), Prevenar given with a Diphtheria, Tetanus and acellular Pertussis (DTaP) vaccine (Group 2) or DTaP alone (Group 3). This follow up study (at least 3 years after the last vaccination) will assess the antibody concentrations in children who previously completed Wyeth study 0887X-101518.
This study will evaluate whether the aluminum-adjuvanted or the non-adjuvanted formulation of the candidate pneumococcal vaccine (V114) is non-inferior to Prevnar 13® based on immune responses to the 13 serotypes in common Prevnar 13®
This study is being conducted to evaluate the safety, tolerability, and immunogenicity of 15-valent pneumococcal conjugate vaccine (V114) compared to Prevnar™ in healthy adults and toddlers.
Thrombocytosis, mostly reactive in nature, is common in pediatric hospitalized patients with infections. Streptococcus pneumoniae (S. Pneumoniae) is the most common pathogen. In this study, the investigators investigated the associations of clinical profiles and thrombocytosis and evaluated platelet counts, leukocyte counts and CRP levels as predictors of hospitalization days in patients with S. pneumoniae infection.
A vaccine called Prevenar is already approved for use in China for vaccination of children younger than 6 years old against infections caused by Streptococcus pneumoniae. This study is to measure the amount of antibodies (antibodies help people fight off diseases) Chinese children aged between 121 days and 6 years (72 months) produce when given Prevenar. The study will also provide more data on how safe and well tolerated Prevenar is in Chinese children.
This study will estimate the incidence of invasive pneumococcal disease in members of the Northern Kaiser Permanente healthcare system during each of the 5 following introduction of Prevnar 13.
A study taking swabs from the back of the nose (nasopharynx) to look at carriage of pneumococci.
The study will evaluate the safety, tolerability and immunogenicity of a 13-valent pneumococcal conjugate vaccine (13vPnC) in HIV-infected subjects 18 years of age or older who have been previously immunized with at least one dose of 23-valent pneumococcal polysaccharide vaccine (23vPS). All subjects will receive 3 doses of 13vPnC, with each study vaccine dose given approximately 6 months apart.
The study will evaluate the safety, tolerability and immunogenicity of a 13-valent pneumococcal conjugate vaccine (13vPnC) in HIV-infected subjects 6 years of age or older who have not been previously immunized with a pneumococcal vaccine. All subjects will receive 3 doses of 13vPnC and 1 dose of 23-valent pneumococcal polysaccharide vaccine (23vPS), with each dose given approximately 1 month apart.