
Peginterferon Lambda-1a for the Prevention and Treatment of SARS-CoV-2 (COVID-19) Infection
Sars-CoV-2 InfectionThis is a phase 2b prospective, randomized, single-blind, controlled trial of a single subcutaneous injection of peginterferon lambda-1a versus placebo for prevention of SARS-CoV-2 infection in non-hospitalized participants at high risk for infection due to household exposure to an individual with coronavirus disease (COVID-19). The study will also evaluate the regimens participants with asymptomatic SARS-CoV-2 infection detected at study entry. All participants will be followed for up to 12 weeks.

Physiopathology of Prosthetic Joint Infections
Prosthetic-joint InfectionThis study aim to explore cellular responses of bone and immune cells to bacterial infections observed in patients with prosthetic joint infections. The investigators will analyze clinical data and tissue samples collected from patients undergoing surgery as part of their usual care for prosthetic joint infections. These research will be conducted on three different hospitals in Paris: Lariboisière (AP-HP), Cochin (AP-HP) and Croix Saint-Simon.

A Study of DWJ1248 in Prevention of COVID-19 Infection After the Exposure of SARS-COV-2
Covid19SARS-COV-2 InfectionTo evaluate the prevention of SARS-COV-2 infection after administration of DWJ1248 in person who contact from COVID-19 confirmed patient compared to the placebo.

Trained and Heterologous Induced-immune Responses to Tropical Infectious Diseases
Tropical Infectious DiseaseValidation of ex vivo immune assays that are surrogates of complex in vitro assays and animal models studies to identify the occurrence, strength, and kinetics of trained and heterologous immunity may significantly impact public health. In this study, the investigators translate findings from systems biology approaches into contextualized in vitro and ex vivo assays in children living in settings where tropical infectious diseases are highly prevalent. The investigators first reproduce the Vitro assays using culture of monocytes, co-culture of T cells and dendritic cells. Based on data from contextualized assays, the investigators will select, test, and validate candidates' surrogate markers of trained immunity and heterologous immunity. The TSH-IMMO is a prospective cohort study. Participants aged 1 to 12 years and living in Lambaréné, Gabon, will be recruited.

Study of E. Coli Isolates From Recurrent Urinary Tract Infections
Urinary Tract InfectionsPatients With Suprabubic Catheter1 moreProspective study aiming at collecting clinical Escherichia coli isolates from patients with recurrent urinary tract infection; samples to be collected during routine procedures.

mNGS for Therapy of Urinary Infectious Diseases
Urinary Tract InfectionsSequelae of; InfectionUrinary tract infection is a common infectious disease in clinic. Although urinary tract infection can be initially diagnosed by clinical sign and symptom, signs and urine routine, the application of appropriate antibiotic therapy depends on the further identification of pathogens. Metagenomic sequencing has been widely used in clinical pathogen diagnosis, especially in difficult infectious diseases. ICompared with tissue samples, cerebrospinal fluid, bronchoalveolar lavage fluid, whole blood and other samples, the application of mNGS in urine samples is relatively limited because incorrect sampling methods before and after collection of urine samples are easy to contaminate the samples and the colonization of distal urethra, periurethral skin and vagina will interfere with the interpretation of reports. Previous small sample studies have shown that the sensitivity of mNGS in urinary tract infection is high, but the specificity is relatively low, and there are many problems such as difficult interpretation of reports and low clinical conformity. This is closely related to the mNGS technology algorithm, such as the inability to eliminate the influence of urinary system background bacteria, and the ambiguity of short sequence alignment, which makes it difficult to distinguish homologous pathogens. In this study, based on the standard mNGS sequencing process, the improved Z value analysis method was used to select strictly enrolled clinical samples and compare them with pathogen culture to observe the clinical value of mNGS with Z value analysis method in the treatment of urinary tract infection.

Effect of Sterile Versus Clean Gloves Intrapartum and Postpartum Infections at Term
ChorioamnionitisIntrauterine Infection2 moreThis prospective randomized controlled study examines whether the type of glove used (sterile vs clean) for cervical examination to assess progression in labor impacts the rates of intrapartum and/or postpartum infection in patients during labor or induction of labor at term.

Efficacy of Calprotectin as A Marker For the Pathogenicity of Blastocystis Infection
Blastocystis InfectionsBlastocystis which is commonly found in the gastro-intestinal tract, has been recognized as a non-pathogenic organism for a few decades. It has a variable distribution. A high prevalence has been reported in developing countries (22.1-100%). In developed countries, the prevalence ranges from 0.5% to 23.1%. The high prevalence noted in developing countries is related to poor hygiene and lack of safe water and food .

AO Multicenter Intervention Trial for Prevention of Surgical Site Infection
Surgical Site InfectionThis study is designed to collect data from 8,476 fracture patients during a pre-and post-intervention phases of two years length each. The intervention consists on the implementation of the AOT SSI Prevention Bundle. D

Non-antibiotic Prescribing for Acute Upper Respiratory Tract Infection
Acute Upper Respiratory Tract InfectionSome acute upper respiratory tract infection(AURI) in children is characterized by fever and vomiting,and it is one common reason for visiting a pediatrician. White blood count(WBC) usually increased in this children patients,hence antibiotics are often prescribed properly assumed. In the present study, it was hypothesized that it was not necessary to prescribe amoxicillin for the children.