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Differentiating simple from complex appendicitis in children before surgery: The Complex Appendicitis Tool (CAT)

1. Immunology and Pathology:To determine the immune response of patients with simple and complex appendicitis in order to identify markers which distinguish between simple and complex appendicitis.2.Clinical and Imaging:To analyze the differences in…

The microbiome of Q Fever Fatigue Syndrome (QFS)

To characterize the interaction between the gut microbiome, related metabolites, immune function, and perceived complaints in QFS-patients, CFS-patients, and healthy individuals.

Seroprevalence of hepatitis E virus infections among vegetarians.

In the present study we aim to test the hypothesis that the reservoir of HEV in the Netherlands are animals that are bred for meat consumption. Therefore we want to compare the HEV seroprevalence in vegetarians and in people with a very low meat/…

Antibiotic treatment alone for children with acute appendicitis; a prospective cohort study part of the Antibiotic versus Primary Appendectomy for Children with acute appendicitis; the APAC trial.

1. What is the complication rate of the initial antibiotic treatment strategy for acute simple appendicitis (radiological proven) in children aged 7-17 years old?

The role of persistent gastrointestinal viral infections in the development of
enteropathy in children with Common Variable Immunodeficiency and secundary immunodeficiencies

To describe the prevalence of enteropathogenic viruses in children with primary (CVID and CVID-like disease) and secundary immunodeficiencies and a potential relation between this prevalence and the development of auto-/allo-immune enteropathy.

Ammonia detection in Helicobacter pylori infections with the Ammonia Breath Analyzer (ABA) demonstrator. A pilot study to investigate the clinical application of the ABA.

The aim of this study is to assess the change of ammonia exhaled in Helicobacter pylori (HP) positive patients compared with patients that are not HP infected after urea administration. In principle, in this pilot study, the results of Kearney et al…

Influences of antibiotics on biodiversity of intestinal microbiota in newborns

1.) Is the gut flora of the healthy infant on day 3, day 7 and day 28 originally from the mother or the environment?2.) Is the process of colonizing in healthy term infants dependent on the mode of delivery?3.) Does breast milk contain bacteria and…

Treatment of recurrent Clostridium difficile infection with fecal therapy:
the FECAL trial (Fecal enema to Eliminate Clostridium difficile Associated Longstanding diarrhea)

With this study we will investiagate the superiority of fecal clysma therapy (n=34 patients) above conventional therapy with the antibiotic vancomycin (n=34 patients) or bowellavage with conventional antibiotic therapy (n=34 patients).

The Effect of Inflammation on Bone Cells

This study aims to gain insight into the effect of inflammatory factors on bone metabolism. For this purpose we formulated the following research questions:1. Which circulating inflammatory factors play a central role in the pathogenesis of general…

The optimal treatment strategy for complex appendicitis in the pediatric population

Subgroup 1 (complex appendicitis without mass and/or abscess formation): LA is associated with reduced superficial site infections, shorter length of stay, less costs, less pain, and better hr-QoL, compared with OA without compromising overall…

Causitive agents and risk factors of gastrointestinal infections in the general practitioners population (VERITHAS)

The overall goal of this study is to get an up-to-date data on the incidence, disease burden, and etiology of gastrointestinal infections in the general practitioner population. More specific goals:1. Determine the incidence of gastrointestinal…