Active clinical trials for "Pneumococcal Infections"

This is a Phase 2 clinical study to support the use of AFX3772 in healthy infants for the prevention of pneumococcal disease. The purpose of this study is to determine the safety, tolerability, and immunogenicity of 3 different dose levels of AFX3772 compared with PCV13. Infants approximately 2 months of age will be enrolled and receive 4 doses of study vaccine over 8 protocol-defined visits spanning a duration of approximately 18 to 21 months. Part 1 is the dose escalation, lead-in portion of the study in which infants at each dose level will be randomized 3:1 in sequential cohorts of increasing doses of AFX3772 or PCV13. Enrollment in Cohorts 2 and 3 will proceed following Data Monitoring Committee (DMC) review of cumulative safety and tolerability data from preceding cohorts. Following completion of DMC review of safety and tolerability data for the cohorts enrolled in Part 1, additional infants will be enrolled and randomized equally to receive either PCV13 or AFX3772 at different dose levels approved for evaluation in Part 2.

The purpose of this study is to understand the safety and effects of a study vaccine (20vPnC) in infants and toddlers. This study is enrolling participants who are: Born after at least 36 weeks of pregnancy and about 2 months of age at the time of entering the study Have a bodyweight of at least 3 kg Participants will receive either the study vaccine (20vPnC) or a licensed vaccine (13vPnC) as a 4-dose schedule as a shot in the muscle. Participants will receive Dose 1 on study day 1. Dose 2 will be given 28-70 days after Dose 1, and Dose 3 will be given 28-70 days after Dose 2. Dose 4 will be given at 365-455 days (approximately 12-15 months) of age. Participation in the study will take approximately 15 months, during which participants will come to the study clinic for 6 times. The study team will ask questions about the participant's health and take some blood samples during the visit.

The purpose of the present study is to compare the immunological response of pneumococcal serotype specific B-cells, the humoral immune response and safety after sequential vaccination versus simultaneous vaccination with 13-valent pneumococcal conjugate vaccine (PCV13) and 23-valent polysaccharide vaccine (PPV23) versus single vaccination with PPV23 in a prospective, randomized controlled monocentric head-to head clinical study in elderly. The hypothesis of this study is that simultaneous vaccination with PCV13 and PPV23 might achieve an improved immune-response compared to sequential vaccination or single vaccination. Adults >=60 years without previous pneumococcal vaccination will be randomized in three groups and receive either PCV13 on day 0 plus PPV23 6 months later (sequential vaccination) or they receive PCV13 plus PPV23 simultaneous on day 0 (simultaneous vaccination) or they receive PPV23 on day 0 (single vaccination). Blood will be taken for pneumococcal serotype-specific B-memory cells against four vaccine-serotypes (ST), included in PCV13 and PPV23, vaccine-serotype 3 (ST3), vaccine-serotype 14 (ST14), vaccine-serotype 19A (ST19A) and vaccine-serotype 23F (ST23F) at visit 1, 2,4,5,7 and 8 and for antibody levels against the 12 vaccine-serotypes included in PCV13 and PPV23 at visit 1, 3, 4, 6, 7 and 8 in all three groups. Adverse events will be recorded for 28 days after each vaccination.

Before the introduction of pneumonia vaccines in 2000, between 700,000 - 1 million children died each year as a result of infection with the bacteria Streptococcus pneumoniae and the resulting diseases, namely, meningitis, sepsis and pneumonia. Most of the deaths were in Africa and Asia. Where the vaccines have been introduced, they have been highly effective and have already reduced disease. However, at 10 USD per child, they are not affordable to most low-income countries without financial support from Gavi, the Vaccine Alliance. This project aims to assess whether lower doses of the two commercially available pneumonia vaccines can protect Kenyan infants as well as the full dose. The results could be used to increase the affordability of the pneumonia vaccine, and enable delivery of the vaccine to continue in the absence of Gavi support.

In France, Streptococcus pneumoniae is the leading agent bacterial involved in community lung disease and meningitis. The frequency of these infections and their mortality increase significantly in those at risk such as patients with certain chronic diseases, immunocompromised or on immunosuppressive therapy. This population, despite regular monitoring, has a limited pneumococcal vaccine coverage of around 20%. By carrying out a reconciliation of treatments upon admission to hospital, the clinical pharmacist can detect those without up to date pneumococcal vaccination status. The goal of this management is to make the patient aware of the need for vaccination and organization upon return home. Thus, this limited pneumococcal vaccination coverage would benefit from intervention by regional clinical pharmacy activities. The study investigators want to study the impact of a structured medico-pharmaceutical collaboration on pneumococcal vaccination of patients with risk on discharge from hospital. The investigators hypothesize that this collaboration in patients at risk of infection with pneumococcus could significantly increase their anti-pneumococcal vaccination coverage

The purpose of this study is to assess the safety and immunogenicity of 13-valent Pneumococcal conjugate vaccine in Chinese infant and young children.

The purpose of this study is to learn about the safety and immune response of 20vPnC in adults in India. This study is seeking participants who: are generally healthy adults of 18 years or older. have not received pneumococcal vaccine. The study will have 2 groups based on age. One group will have particpants between 18 to 49 years of age. The other group will have participants of 50 years or older. Participants will take part in the study for about one month which includes two visits to the study clinic. Participants will receive a single dose of study vaccine (20vPnC) into the arm at visit 1 and will come to study site for a follow-up visit after about a month. The study team will ask questions about the participant's health and blood samples will be taken in a subset of participants during the visits.

This study will evaluate the safety, tolerability, and immunogenicity of a pneumococcal 21-valent conjugate vaccine (V116) in persons living with human immunodeficiency virus (HIV), for the prevention of pneumococcal disease caused by the serotypes in the vaccine.

In this study the antibody response after vaccination with the 13-valent pneumococcal conjugated vaccine (PCV13) followed 2 months later by the 23-valent polysaccharide vaccine (PPSV23) in adults with chronic lymphocytic leukemia will be investigated.

The primary objectives of this study are to evaluate the safety and tolerability of the pneumococcal 21 valent conjugate vaccine (V116), and to evaluate the serotype-specific opsonophagocytic activity (OPA) post-vaccination with V116 and PCV15 (a pneumococcal conjugate vaccine that includes 15 serotypes) + PPSV23 (comprised of the polysaccharides from 23 of the serotypes causing disease in adults) post-vaccination. within each vaccination group separately.