Active clinical trials for "Communicable Diseases"

Herpesvirus infections may be severe in immunocompromised patients, with a high risk of complications and mortality. Recipients of hematopoietic stem cell transplant (HSCT) or patients receiving high-intensity chemotherapy for hematological malignancies are the most vulnerable individuals. Although the worldwide prevalence of herpes simplex virus 1 (HSV-1) and varicella-zoster virus (VZV), antiviral prophylaxis in seropositive HSCT recipients has significantly reduced the rate of infection. Acyclovir (ACV) is the first-choice drug for the prophylaxis or the therapy of that kind of infection. Since the beginning, ACV has demonstrated to be characterized by a large interpatient variability, especially in children. Therefore, therapeutic drug monitoring and pharmacokinetic studies may help in optimizing drug in children with malignancies.

The great harm of pancreatic diseases and the unknown etiology and pathogenesis make it difficult to intervene in most early cases in time. Previous studies by scholars and applicants at home and abroad have shown that the microflora in pancreatic tissue is closely related to chronic pancreatitis and pancreatic cancer. However, the research on the mechanism of microbial diversity in pancreatic tissue and the occurrence and development of various pancreatic diseases has not been reported. Based on the previous research, this subject continues to take various pancreatic diseases as the research object based on the database of pancreatic center and pathology department of Ruijin Hospital Affiliated to Medical College of Shanghai Jiaotong University, To explore the characteristics of microbial flora in pancreas in different pancreatic diseases and its mechanism of influence on disease microenvironment. Select specific microbial flora or targets in the pancreas for various pancreatic diseases, so as to provide new theoretical basis and practical guidance for the early diagnosis and treatment of pancreatic diseases.

Infectious anorectitis is a poorly described clinical entity. Their epidemiology is poorly known, as are their clinical, diagnostic (diagnoses are regularly made in gastroenterology and new diagnostic tools are now available) and therapeutic aspects. The proctology center of the Marie Thérèse Center is the leading proctology center in the Ile-de-France region both in terms of recruitment and reputation, and drains a large proportion of patients with anorectitis for specialized care. The clinical microbiology laboratory of the Saint Joseph Hospital Group is linked to the Marie Thérèse Center to provide its expertise in the microbiological and infectious aspects of the management of these infections. In recent years, the analysis of data from this large population of patients referred to the Léopold Bellan proctology center for suspected ano-rectitis has revealed the pathogens Neisseria gonorrhoeae and/or Chlamydia trachomatis. Mycoplasma genitalium (MG) is an emerging pathogen responsible for Sexually Transmitted Infections (STI) and has been described increasingly in recent years. Studies on this pathogen will allow to better identify risk factors and to target optimized prevention and therapeutic management strategies.

Prosthetic Joint Infection (PJI) of a Total Hip Replacement (THR) is a disastrous complication of an otherwise extremely successful surgical procedure. It is associated with a burdensome treatment for the patient, significant challenges for the medical team and high costs for society. As more joint replacements are being performed each year, due to an ageing population and lower thresholds for surgery, the number of PJIs is on the rise. Many of these patients will be referred to University Hospitals Leuven as the physicians have extensive experience with this particular pathology and can offer a multidisciplinary and patient-tailored treatment. Many controversies exist in the field of PJI treatment, both with regard to the surgical aspects as well as the antibiotic treatment. Setting up randomized controlled trials to answer these questions has been proven to be very difficult due to large variations in patients, implants, germs, soft and hard tissues, antibiotic resistance patterns, and so on. Also, surgery for PJIs is usually non-elective / semi-urgent and therefore time to include patients into different trials is limited. Therefore the investigators will prospectively collect data on patients with PJI treated at University Hospitals Leuven, starting 01/01/2022, in order to have knowledge of own results and inform patients about chances of success prior to treatment; perform internal audits and quality checks; answer questions in the field of PJI treatment not suitable for RCTs.

A multicenter observational, prospective cohort study that consisted of a large-scale data source of hospital ICU admissions and patient-level clinical data in Spain. The main objective is to develop a national database belonging to SEMICYUC (Spanish Society of Critical Care) to describe epidemiological and clinical characteristics and risk factors related to ICU mortality in critically ill patients admitted to ICU due to severe COVID-19 in Spain.

The purpose of this study is to learn more about how to better track smell recovery in people who have been infected with the SARS-CoV-2 virus (which causes COVID-19). Many people who have been infected by this virus develop changes in their sense of smell (olfaction). We are interested in measuring smell function objectively via smell cards that test odor intensity, identification, and discrimination. Objective and precise olfactory testing that can be performed in the convenience of one's home will help identify people with smell loss after infection by SARS-CoV-2. We will use results from this test to better understand the relationship between SARS-CoV-2 infection and recovery of olfactory function and to learn whether the AROMHA longitudinal smell test is a reliable olfactory function tracking tool to quantify smell loss in the context of COVID infection. These results may inform the design of therapeutic clinical trials to accelerate the recovery of smell function.

Determining whether in the mouth there are differences between the participant groups in the nature and activity of mucosal innate immunity, in immune responses to SARS-COV2 antigens, or in the oral microbiome

In this study, we evaluate peri- and postoperative parameters of patients undergoing a cystectomy and try to find risk factors for infectious complications. In detail, we analyze their medical history, demographic data, lab values, microbiological tests as well as histological and radiological findings. Furthermore, after discharging our patients, we send them several follow-up questionnaires at regular intervals and offer them free follow-up examinations.

Carbapenem-resistant Enterobacteriaceae (CRE) are increasingly identified in children in China. Pediatric intensive care unit (PICU) is the high-risk area. However, data on the epidemiology of CRE in hospitalized children in PICU are limited. The objectives of this study are to characterize the risk factors for colonization or infection with CRE and describe the microbiologic characteristics of pediatric CRE isolates. The investigators will perform a single retrospective study from January 2018 to December 2019 at PICU of Children's Hospital of Fudan University .

Type I interferons (IFN-I) production is induced by the detection of viral molecules, such as RNA or DNA viral strands, through pattern recognition receptors (PRR) present on many immune cell types. Despite a minimal concentration, IFN-I secretion activate the secretion, by neighbouring cells, of more than 700 proteins with antiviral properties (inhibition of viral replication, destabilization of virus membranes, etc.). IFN-I constitute therefore one of the major first line of defence established by the immune system in response to viral infection. Briefly, during the Coronavirus disease (COVID-19) pandemic, several teams including ours, highlighted a lack of IFN-I response in approximately one in five individuals presenting a severe form of COVID-19. Interestingly, within a large part of them, in vitro investigations revealed the presence of autoantibodies presenting neutralizing capacities against alpha and/or omega interferons This finding confirms the deleterious role of anti-IFN-I autoantibodies on the antiviral immune response and the key role of IFN-I pathway regarding defences against COVID-19 infection. Furthermore, those observations pave the way to interesting research that would allow understanding the underlying pathophysiological mechanisms of severe viral respiratory infection. The research hypothesis are: i) IFN-I deficiency could induce severe forms of viral infections which could lead to intensive care admission ii) IFN-I deficiency could increase viral loads in nasopharyngeal samples, and be associated with protracted viral clearance iii) The frequency of viral co-infections may be higher in case of IFN-I antiviral pathway blockade, iv) severe forms of respiratory viruses' infections could be induced by other anti-cytokine autoantibodies. In addition to confirming research hypotheses recently mentioned, the aim of this clinical protocol will be to assess the impact of antiviral innate immune response alterations in severe respiratory infections.