Active clinical trials for "Pneumococcal Infections"

Streptococcus pneumoniae is a type of bacteria that can cause infections of the ears, sinuses or lungs. It can also cause more serious infections of the blood or brain. The elderly and young children are more vulnerable to these types of infections. The vaccines available at present are effective only on a certain number of strains of the bacteria. The PnuBioVax vaccine is being developed to work on a broader range of strains. This study will be looking at the safety and tolerability of the study drug for three different dosages: 50 μg, 200 μg, and 500 μg compared to placebo. The population eligible to take part in the study are healthy male and female subjects between 18 and 40 years of age. Volunteers for the study will be recruited through advertisements. Each volunteer will have received an information sheet concerning the study and will have agreed to participate in writing. Volunteers will be given at least 48 hours between reading the information leaflet and agreeing to participate. Only subjects who agree to undertake precautions to avoid pregnancy of either themselves of their partner during the study period will be eligible. Volunteers will give signed consent for their physician to be notified about their participation in the trial.

The main aim of this clinical study is to investigate the safety and tolerability of different dose strengths of IC47 up to 6 months after the first vaccination. A total of 32 healthy subjects (male or female) will participate in this clinical study. The subjects will be divided into 4 groups of 8 subjects each. Thirty (30) μg or 150 μg of IC47 will be administered three times in intervals of 42 days each.

The primary purpose of this study is to evaluate the immune response to 13-valent pneumococcal conjugate vaccine (13vPnCV) in children who as infants received either a complete series of PnCV versus a combination of PnCV and pneumococcal polysaccharide vaccine (PSV). This study is also intended to evaluate the safety of the 13vPnC.

Streptococcus pneumoniae is the major cause of bacterial infection in patients with sickle cells disease. The 23-valent pneumococcal polysaccharide vaccine (PSV) is supposed to be poorly immunogenic in these patients. We want to evaluate whether a prime with a 13-valent pneumococcal conjugate vaccine (PCV), able to induce immunologic memory, would improve the immune response against SP polysaccharides (SPP). Primary objective: To evaluate and compare the specific antibody response to a prime-boost vaccine strategy combining PCV prime at W0 followed by the administration of PSV boost at W4, to the administration of PSV alone at W4 in patients with sickle cells disease. Secondary objectives: Evaluation and comparison of the specific antibody response to the thirteen pneumococcal serotypes shared by the PCV and PSV vaccines, 4 weeks after the single PSV vaccination for patients from Group 1 or 4 weeks after the boost PSV vaccination for patients from group 2. Evaluation of the duration of the specific antibody response at W24 and 96. Evaluation of the T CD4 lymphocyte response to the CRM 197 protein. Safety of the vaccines. Study Design: Randomised, monocentric, controlled phase II study of the immunological efficacy of a prime boost strategy combining the sequential administration of the PCV and PSV, compared to the administration of the PSV alone. 180 adults patients with sickle cells disease will be included. The primary endpoint : proportion of responders at W8 to at least 10 of thirteen serotypes. Secondary endpoints : Proportion of responders at W8 according to 4 categories of responders: 5-7; 3-4; 2-1 and 0. Evaluation of the pneumococcal opsonophagocytic activity (OPA) at baseline and W8 for each serotype, defined as the proportion of patients with OPA > 1:8 geometric mean of the specific antibody titers proportion of patients who experienced an increase of specific antibody levels 1 g/ml. Evaluation of the priming effect of the PCV vaccine in the group 1. Duration of the specific antibody responses at week 24 and W96. CD4 T lymphocyte responses to the CRM 197 protein (proliferative and cytokine production) at weeks 0, 8 and 12. Safety of the vaccines frequency of Streptococcus pneumoniae infections. Statistical Considerations: With a sample size of 180 patients, and a randomization ration of 1:1, the study will have a power of at least 90% to show a difference of 25% category between the group receiving PCV and PSV vs the group receiving PSV alone (two-sided type I error = 5%). The primary comparison between both groups will be performed using a Chi2 test for independent groups or a Fisher exact test where appropriate.

According to the World Health Organization (WHO), immunization; is defined as making a person immune or resistant to an infectious disease by applying a vaccine (1). The primary indicator of an effective immunization is that adequate vaccination rates have been achieved. The risk of cancer and chronic diseases increases with advancing age, which increases the importance of immunization in adults. Cancer patients, one of the patient groups for whom adult immunization is a priority and crucial, are subjected to immunosuppressive medications, making them vulnerable to infections. In cancer patients, infections are severe, antimicrobial treatments are sometimes insufficient, leading to morbidity and mortality. One of these infections is pneumococcal disease caused by Streptococcus pneumonia, with high morbidity and mortality in cancer patients. Invasive pneumococcal disease is seen 23-48 times more frequently in cancer patients compared to healthy individuals. In many countries worldwide, the 13-valent pneumococcal conjugate vaccine and the 23-valent polysaccharide pneumococcal vaccine, both developed to prevent pneumonia caused by Streptococcus pneumonia, are successfully used in childhood vaccination programs within the framework of WHO's immunization policies. However, in Turkey, like in the rest of the world, the required adult immunization rates have not been achieved yet. Immunization rates among cancer patients, one of the patient groups for whom adult vaccination is required, remain below the targeted levels. Pharmacists, one of the health professionals, have significant contributions to increasing vaccination rates in adults. According to studies, pharmacists can help raise immunization rates by providing education and information. In Turkey, no study has been conducted to assess the impact of vaccination education on cancer patients' attitudes and actions about the pneumococcal vaccine. This study aimed to determine the impact of pharmacist-led pneumonia and pneumococcal vaccine education on cancer patients' vaccination attitudes, knowledge, and vaccination rates.

The goal of the study was to determine effectiveness of a telephone reminder to increase pneumococcal vaccination in a managed care population.

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.

The goal of this research study is to improve rates of appropriate influenza and pneumococcal vaccination among adults who receive care at a large multi-specialty group practice in central Massachusetts. The investigators plan to conduct a non-blinded randomized controlled trial during flu season 2014-2015 (Cycle 1). A total of 20,000 e-portal users and 10,000 non e-portal users who are identified in the Reliant Medical Group (RMG) Electronic Health Record (EHR) as not being up to date on their influenza vaccines will be randomized. E-portal users will be randomized to receive: Arm 1: E-portal message with Interactive Voice Recognition (IVR) call Arm 2: E-portal message with no IVR call Arm 3: No e-portal message with IVR call OR Arm 4: No e-portal message with no IVR call (Control, e-portal users) Non e-portal users will be randomized to receive either: Arm 5: IVR call OR Arm 6: no IVR call (Control, non e-portal users)

The purpose of this study is to evaluate the immunogenicity and safety of 13-valent pneumococcal polysaccharide vaccine when given concomitantly with seasonal inactivated influenza vaccine to adults 50 years and older who have previously received 23-valent pneumococcal polysaccharide vaccine.

This study will assess the safety and tolerability of a single dose of 13-valent Pneumococcal Conjugate Vaccine for approximately 1 month after vaccination sequentially in healthy Chinese adults aged 18 through 55 years, followed by children aged 3 through 5 years, and then infants aged approximately 2 months.