View clinical trials related to Strep Throat.
Filter by:Streptococcus salivarius K12, an oral probiotic strain, has emerged as a promising tool in promoting oral health. Found naturally in the mouth, S. salivarius K12 works by establishing itself in the oral cavity and producing antimicrobial compounds, such as bacteriocins, including salivaricin A2 (SalA2) and the 2,740-Da salivaricin B (SboB) lantibiotics, which inhibit the growth of harmful bacteria including Streptococcus pyogenes. By maintaining a healthy balance of oral microbiota, this probiotic may help prevent common oral health issues such as bad breath, throat infections, and tooth decay. While further research is needed to fully elucidate its mechanisms and efficacy, S. salivarius K12 holds potential as a natural and safe adjunct to oral hygiene practices for promoting overall oral health and hygiene.
Sydenham's chorea (SC) is a post-streptococcal, neuropsychiatric disorder associated with anti-neuronal antibodies. The investigators demonstrated elevated anti-D1-receptor (D1R) and anti-D2-receptor (D2R) antibodies titers compared to controls using ELISA. Similarly, the investigators found antibodies to surface D2R in neuropsychiatric, autoimmune disorders, including SC using cell-based assays. The investigators hypothesize that these autoantibodies cause neuropsychiatric symptoms by inducing intracellular signaling changes resulting in altered dopaminergic neurotransmission. To check this, the investigators will test whether sera from patients with SC alter dopaminergic signaling pathways. The investigators will examine sera from 30 SC patients with active symptoms and 30 age-matched healthy controls. Patients with SC will be assessed for severity of neuropsychiatric symptoms using UFMG Sydenham's Chorea Rating Scale. Controls with evidence of streptococcal infections or autoimmune disorders will be excluded. Sera will be examined for anti-D1R and anti-D2R antibodies. Signaling studies will assess sera impact on 1) calcium/calmodulin-dependent protein kinase II activity in human neuronal cells. 2) dopamine D1/D2 receptors signaling using cAMP assays in transfected cell lines. The investigators will examine the correlation between modified signaling and clinical symptoms.
This study is designed to determine the accuracy of the Preview Rapid Strep A Test compared to a laboratory reference method for Group A Streptococcal infection and to determine the precision of the Preview Rapid Strep A test.
Group A Streptococcus (GAS) infection is a major cause of death and disability globally with a disproportionately high burden in settings of disadvantage worldwide. Acute infections due to GAS range from very common superficial skin infections (>150 million prevalent cases) and pharyngitis (over 600 million incident cases) to life-threatening invasive disease (>600,000 incident cases) such as necrotising fasciitis. Post-infectious GAS sequelae of GAS include acute rheumatic fever (ARF, ~500,000 incident cases) leading to rheumatic heart disease (RHD, ~34 million prevalent cases), and acute glomerulonephritis. The health services impact of GAS disease in all its forms is immense and strikes at every level from primary to intensive care. Controlled human infection models (CHIMs) have a long history of critical contributions to vaccine development. Data from CHIMs meeting modern scientific, regulatory, and ethical standards, are aiding efforts to control over 25 major human pathogens, including bacteria (e.g. pneumococcus, cholera), viruses (e.g. respiratory syncytial virus, influenza), and parasites (e.g. malaria, schistosomiasis). A reliable and safe controlled human infection model of GAS pharyngitis will be an important part of the global vaccine development effort. To build the model, the investigators are undertaking a dose-ranging study using an observational, dose-escalation, inpatient trial to determine the dose of GAS administered by direct oropharyngeal inoculation (bacteria 'painted' onto throat) required to reliably produce a pharyngitis attack rate of ≥ 60% in carefully screened healthy adult volunteers.
The study is a randomized controlled trial, with an Intervention Group and a Control Group at the University of Utah (U of U) and University of Wisconsin (UW). BU serves as the primary award and coordinating institution. The unit of randomization will be at the clinic level at each institution. UW will recruit all General Internal Medicine (GIM) Clinics and Department of Family Medicine (DFM) Clinics in Dane County as well as their East and West Urgent Care Clinics. U of U will recruit all affiliated primary care practices. The unit of randomization will be the clinic. The study biostatistician will receive a list of clinic sites that have agreed to participate in the study from the site PIs. Clinics will be randomized to either Intervention group or to a Control group stratified by clinic size. Both groups will receive a single 45 minute academic detailing session describing evidenced-based diagnosis and treatment for strep throat and pneumonia. The Intervention Group will also receive a demonstration of the iCPR tool during their academic detailing session. Providers and clinic staff will be invited to the academic detailing session. Any provider or staff that is unable to attend the session will receive written and electronic copies of the material. Individual providers will not be specifically recruited for participation and they will participate or not based on personal preferences as they would for any clinic quality improvement project. The iCPR tool will be "turned on" for providers in the Intervention group. This means that the best practice alerts will trigger for appropriate patients with suspected strep throat or pneumonia. We will collect and analyze data about the use of each element of the iCPR tool during patient visits, including which elements of the tool were used and how often. We will also collect data from the site EHRs about antibiotic and diagnostic test orders for strep throat and pneumonia from all clinics participating in the trial, both Intervention and Control groups. After one year of study implementation, we will run an Interim Primary Outcome Report comparing the antibiotic and diagnostic test orders between the Intervention and Control group clinics. This report will be in the aggregate and will not contain any personally-identifiable information. If there is a significant difference between the groups that meets our predetermined stopping end points, we will stop the randomized controlled trial.
This study is designed to look at healthcare utilization following the removal of tonsils and adenoids in pediatric patients who are not given an antibiotic following surgery.
The purpose of this study is to demonstrate the ability of the Sofia Strep A FIA test and Sofia Analyzer to accurately detect a throat swab specimen for the presence or absence of Group A Streptococcus when compared to culture.
The purpose of this study is to demonstrate the ability of the IND One Step Strep A test to accurately test a throat swab specimen from a symptomatic patient for the presence or absence of Group A Streptococcus (Strep A) when compared to culture.
The purpose of this study is to demonstrate the ability of the Strep A Fluorescent Immunoassay Analyzer to accurately detect a throat swab specimen for the presence or absence of Strep A when compared to culture.