Active clinical trials for "Pneumococcal Infections"

HIV-infected people and pregnant women are at risk of developing severe pneumococcal disease. The purpose of this study is to compare the safety and immune response to two pneumococcal vaccines in HIV-infected pregnant women.

This an open phase Ⅳ clinical trial of 23-valent pneumococcal polysaccharide vaccine manufactured by Sinovac Biotech Co., Ltd.The purpose of this study is to evaluate the immunity persistence after single dose of 23-valent pneumococcal polysaccharide vaccine.

This is an open-label phase III clinical trial. The purpose of this trial is to investigate in detail the kinetics of the immune response to Prevenar-13, a pneumococcal conjugate vaccine, compared to Pneumovax-II, a pneumococcal plain polysaccharide vaccine. With their consent, healthy adults (n=2 in each group) aged over 18 years who have not received any pneumococcal vaccine in the past will receive either vaccine at their first visit. Blood will be taken before vaccination and at day 0,1,2,4,6,8,10,12,14,16,18,20,23,26,30,35 as well as 2,6 and 12 months following vaccination. With specific consent, a small volume of blood will be used to store DNA and RNA for analysis of the genetic associations with immune responses and adverse reactions to vaccines as well as the RNA expression following a vaccination. Serum or plasma will be used to assess antibody level and available whole blood will be used for B cell assays and to examine immunoglobulin gene usage in B cells.

The purpose of this study is to determine that revaccination of Pneumococcal Vaccine is well tolerated and produces an immune response in older adults.

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®

Splenectomized thalassemia major subjects were provided with PCV pneumococcal vaccine (Prevenar 13®) at the start of the trial, following which they were randomly assigned to 2 groups (zinc and placebo group). After 8 weeks, the subjects received PPV pneumococcal vaccine (Pneumovax®). Zinc syrup was provided to the zinc group at a dose of 1.5 mg/kg/day (maximum of 50 mg/day). Pneumococcal IgG examinations were conducted at the start of the trial and after 12 weeks.

This study is designed to assess the impact of 13-valent Pneumococcal Conjugate Vaccine (13vPnC) on nasopharyngeal colonization with Streptococcus pneumoniae in healthy infants.

Lung immune responses are regulated independently of systemic responses. Injected vaccines may induce optimal responses in blood but not at mucosal surfaces. We compared the responses in serum and lung fluid to injected pneumococcal conjugate vaccine.

The 13-valent pneumococcal conjugate vaccine (13vPnC) is being developed for adults to prevent pneumococcal diseases such as meningitis (inflammation of the brain lining), septicemia (blood poisoning), and pneumonia (inflammation of the lungs). As trivalent influenza vaccine (TIV) is frequently given to adults, it is important to show that both vaccines can safely be given together without affecting the immune response (body's ability to protect against disease).