View clinical trials related to Pneumococcal Infections.
Filter by: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 study is to describe the safety and immunogenicity of Pneumococcal Conjugate Formulations in healthy adults 18 through 49 years of age.
This is a randomized, double-blind, positive-controlled 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 immunogenicity and safety of 23-valent pneumococcal polysaccharide vaccine in population aged 2 years and older.
This study will evaluate the safety, tolerability, and immunogenicity of a pneumococcal 21-valent conjugate vaccine (V116) in pneumococcal vaccine-naïve adults 18 to 49 years of age. The primary study hypothesis is that all 3 lots of V116 are equivalent as assessed by the serotype-specific opsonophagocytic activity (OPA) Geometric Mean Titers (GMTs) at 30 days postvaccination for all serotypes included in V116.
This is a phase 3, randomized, double-blind, active comparator-controlled study of the safety, tolerability, and immunogenicity of V116 compared to PCV20 (pneumococcal 20-valent conjugate vaccine ([Prevnar 20™ / APEXXNAR™]) in pneumococcal vaccine-naïve adults. It is hypothesized that V116 is noninferior to PCV20 for the common serotypes and superior to PCV20 for the unique serotypes as assessed by serotype specific opsonophagocytic activity (OPA) 30 days postvaccination. It is also hypothesized that V116 in participants 18 to 49 years of age immunobridges to V116 in participants 50 to 64 years of age as assessed by serotype specific OPA geometric mean titers (GMTs) 30 days postvaccination for all 21 serotypes in V116. Participants ≥50 years of age will be enrolled in Cohort 1, and participants 18 to 49 years of age will be enrolled in Cohort 2.
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 toddlers who had 2 prior doses of Prevnar 13. This study is being conducted in children who: - are between 12 to 23 months of age; - are healthy as determined by the study doctors; - have received 2 doses of Prevnar 13 during the first year in life. Participants in this study will receive either 1 dose or 2 doses of the study vaccine or 1 dose of Prevnar 13 as a shot in the muscle. During the study, participants will have to come to the study clinic to receive the vaccines and have blood sample collected. The study team will work with participants' parents or legal guardians to monitor any unwanted reactions to the vaccines. Participants are expected to take part in this study for about 1 or 3 months, for 1 dose or 2 dose schedules, respectively.
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.
CAP'Hospi is an observational, multicentric study in France which primary objective is to describe the proportion of Community Acquired Pneumonia due to serotypes included in PCV20 among adults hospitalized for CAP
Infection with Streptococcus pneumoniae (the pneumococcus) is the leading cause of pneumonia, bacterial meningitis and bacteraemia worldwide in the very young and the elderly. Although pneumococcal vaccines exist, they do not provide complete protection and new strategies to combat this pathogen are urgently needed. Asymptomatic infection of S. pneumoniae in the human nasopharynx precedes the development of pneumococcal disease. Previously, an Experimental Human Pneumococcal Carriage (EHPC) model has been developed at the Liverpool School of Tropical Medicine (LSTM). The current study entails to establish this model in healthy adults living in the Netherlands using the inoculation dose currently used at LSTM. Healthy adult participants (M/F) will be inoculated intranasally with strain BHN418, a penicillin sensitive serotype 6B strain of S. pneumoniae that was previously isolated from a healthy carrier. Following inoculation, participants will be monitored and blood and nasal samples will be collected over a period of 28 ± 3 days. Participants will receive a course of amoxicillin to eradicate infection on or shortly after the last visit at day 28 ± 3, unless S. pneumoniae is not detected on both day 14 and 28 ± 3 post-inoculation.