Listeriosis

Researchers are evaluating the safety, tolerability, and how the body processes pharmacokinetics single and multiple intravenous doses of a drug called BWC0977 in healthy adult volunteers. This Phase 1 study involves a total of 64 healthy adults aged 18 to 55 years and is designed as a randomized, double-blind, placebo-controlled trial with multiple dose groups. The study focuses on measuring any treatment-emergent adverse events and serious adverse events to understand the drugs safety profile. Participants will be divided into two main groups single ascending dose SAD and multiple ascending dose MAD cohorts. In the SAD phase, volunteers receive one intravenous infusion of BWC0977 or placebo over 2 hours at doses of 750 mg or 1500 mg. In the MAD phase, participants receive multiple intravenous infusions of BWC0977 or placebo over 30 minutes to 2 hours daily for 7 to 10 consecutive days. Dose levels will increase sequentially based on safety and tolerability data collected during the study. During the study, participants will undergo various assessments including physical exams, vital signs, ECGs, laboratory tests, and blood sampling at specific times before, during, and after infusions to monitor safety and measure drug levels in the body. Researchers will track adverse events for up to 8 days after single dosing and up to 16 days after multiple dosing. Volunteers must comply with study visits and requirements throughout the trial, which lasts until August 2026.

Researchers are evaluating the efficacy and safety of intravenously administered fosfomycin in treating severely infected patients across Europe. This prospective, multicenter, non-interventional study focuses on infections such as osteomyelitis, complicated urinary tract infections, nosocomial lower respiratory tract infections, bacterial meningitis or central nervous system infections, bacteraemia or sepsis, skin and soft tissue infections, endocarditis, and other infections covered by national guidelines. Patients receive fosfomycin intravenously according to the respective national Summary of Product Characteristics SmPC. The study is observational and does not involve randomization or placebo. It includes monitoring during treatment and follow-up periods, with evaluations up to six months for treatment outcomes and up to one year for osteomyelitis follow-up. The study documents clinical and microbiological cure rates, clinical improvements, and sodium and potassium serum levels during hospital stays. Participants are assessed for clinical success at multiple points, including initial response within 7 days, end of treatment up to 6 months, test of cure, and follow-up up to one year for osteomyelitis. Safety monitoring includes daily recording of adverse events, serious adverse events, adverse drug reactions, and deaths during treatment and follow-up. The study tracks dropouts due to treatment failure or adverse events. Overall, participation duration varies depending on treatment and follow-up schedules.

Researchers are evaluating how experiencing awe influences adults willingness to engage in prosocial preventive behaviors against infectious diseases. This randomized controlled trial includes adults from Hong Kong, Singapore, and ten major cities in Mainland China. The study aims to find out if feeling awe can increase intentions for actions like vaccination, mask-wearing, and social distancing, and whether these effects differ by location. Participants will be randomly assigned to one of two groups. The intervention group will play a three-step mini game called Hidden Picture Puzzle designed to induce awe by revealing nature scenes and reflecting on feelings evoked. The control group will play the same game format but will uncover everyday objects and describe their features instead. Each participant will complete four rounds of the game with different images. During the study, participants will complete the game and immediately report their intentions to engage in preventive behaviors and their choices in pandemic-related scenarios. The study will also assess intentions to participate in social activities after the game. The trial is conducted online, and participants had a baseline assessment about four months before the trial. The research team will monitor responses immediately after the game to measure the impact of awe on prosocial behavior.

Listeriosis is a rare and severe infection caused by the bacterium Listeria monocytogenes, mostly affecting older adults, people with weakened immune systems, and pregnant individuals. Some younger patients under 40 without known risk factors also develop serious forms, suggesting a possible genetic susceptibility. The MONALISA study is a national, ongoing case-control study initiated in 2009 to explore risk and prognosis factors of listeriosis, including genetic vulnerability. This study collects human biological samples such as blood, skin biopsy, and saliva from both patients diagnosed with listeriosis and their related volunteers. The genetic susceptibility to listeriosis is being investigated to better understand why some people develop severe or unusual forms of the infection. Volunteers related to patients may participate if a genetic susceptibility is identified in the patient. Participants provide samples and consent for genetic analysis over a period of 10 years. Researchers will identify genetic factors linked to susceptibility to listeriosis and its severe or atypical forms. The study aims to improve patient care through better treatment and prevention based on genetic findings. Participation includes providing biological samples and written consent, with ongoing observation and data collection.

Researchers are conducting a national, multicenter prospective study to understand how genetic defects and autoantibodies against type I interferons IFNs affect the immune response to infections, especially severe viral diseases like COVID-19. This study focuses on adults who either have inborn errors of immunity IEI impairing type I IFN responses or carry neutralizing autoantibodies against type I IFNs, which have been linked to severe illness and increased mortality in COVID-19. The aim is to track infectious, autoimmune, and cancer-related events to improve prevention and management strategies for these patients. The study includes adults with these immune characteristics who may be patients with past or current disease or healthy individuals such as blood donors or relatives of affected patients. Participants will have yearly visits to clinical centers for blood sampling and medical history updates, including investigations of immune markers, autoantibodies, and genetic analyses. Additional visits occur if participants experience infections, autoimmune flare-ups, cancer diagnoses, or COVID-19 infections, with detailed blood tests and teleconsultations. Controls without these immune abnormalities will be matched and followed through questionnaires and health data linkage. Participants undergo an initial visit to collect demographic information, medical and family history, and blood samples for detailed immune and genetic tests, including whole-exome or whole-genome sequencing. Follow-up visits occur annually for up to four years, involving clinical assessments and blood sampling to measure autoantibody levels and immune function. Clinical events and healthcare use will be tracked through national health data, and the main outcomes include measuring autoantibody levels and their neutralizing activity over time. This long-term monitoring aims to reveal factors influencing disease risk and immune changes in this population.

Inappropriate antibiotic prescribing in primary care contributes significantly to antimicrobial resistance. This trial evaluates a digital Prescription Support System PSS designed to help Belgian general practitioners follow national antimicrobial guidelines more closely during patient consultations. The study uses a stepped-wedge cluster randomized design where general practices gradually transition from usual care to using the PSS, allowing comparison of prescribing patterns over time. The PSS integrates guideline-based recommendations from the Belgian BAPCOC guidelines into existing electronic health records. It presents advice through a decision tree for common infections and guides antibiotic choice, dosage, duration, and situations where antibiotics are not recommended. Practices start without access to the PSS and switch to using it in four sequential steps lasting three months each, after which they retain access for the study duration. Participants are general practices whose prescribing data are collected quarterly via the Belgian Antibiotic Barometer, ensuring anonymity and data security. Researchers will measure antibiotic prescribing rates and monitor PSS usage, usability, acceptability by clinicians, and any unintended effects on workflow. The study lasts up to 12 months per practice, aiming to inform broader implementation and optimization of the PSS in Belgian primary care.

Researchers are investigating the virologic and immunologic characteristics of HIV infection, along with other infectious and non-infectious immune deficiency diseases, to better understand how HIV causes disease. Due to the lack of effective animal models, the study uses human peripheral blood cells to examine HIV infection both inside the body and in laboratory settings. The goal is to explore various pathogenic aspects of HIV and immune system regulation using human immune cells. Participants include individuals living with or without HIV, other infectious diseases, or immunodeficiencies. The study collects blood products and other biological samples from these groups to support research by NIH Intramural Investigators. Samples are used throughout the study to investigate HIV and related immune conditions, including genomic and proteomic comparisons between affected individuals and healthy volunteers. During the study, participants provide blood samples and undergo assessments such as blood pressure, pulse, and blood counts. They also complete informed consent and agree to allow their samples to be used in future HIV research. Researchers measure virologic and immunologic markers of HIV and other immune deficiencies. The study is observational, with ongoing sample collection and analysis to better understand disease processes in adults aged 18 to 120 years.