View clinical trials related to Allergy.
Filter by:Biodiversity is essential for nature and human well-being. Land use has reduced biodiversity in cities that is associated with altered commensal microbiota and a rising burden of immunological disorders among urban children. The investigators will estimate how rewilding of kindergarten yards affects commensal microbiome, prevalence of allergies, asthma, atopic dermatitis and infections, cortisol levels, cognitive skills and plasma cytokine levels of children. Our specific aims are: To assess if rewilding diversifies health-associated skin, saliva and gut microbiota and reduces infectious diseases and atopic or allergic symptoms. Assess whether the rewilding has positive effects on cognitive skills. Assess whether the rewilding changes cortisol and plasma cytokine levels. The investigators will recruit altogether 320 (160 per treatment) study subjects aged between 1-5 to questionnaire study (Task 2), from which 120 study subjects will be analyzed more detailed using microbiological and blood samples (Task 1).
The aim of the SAID study is to create a national resource in Sweden to enable comprehensive immunological analyses of an extremely complex and clinically challenging group of individuals with variable forms of immune system dysregulation. We hope to establish a biobank of primarily blood and fecal samples from children and adults, with confirmed or suspected immune dysregulation, as well as age- and sex- matched healthy controls, for comparisons of immune cell/mediator alongside various clinical presentations of these immunological diseases as well as microbiome samples as possible a possible modifier of clinical presentations. The project will also include the establishment of a national database with deep immunological data, treatment and clinical outcomes for these patients, accessible to participating researchers and clinicians.
The goal of this observational study is to learn about repetitive anaphylactic reactions in food allergic patients and to compare the frequency of repetitive reactions between different elicitors in food allergic patients. The main question it aims to answer are: • Is there an elicitor specific difference in the occurrence of anaphylactic reactions once the elicitor has been identified and the patient received counselling about its avoidance? Participants will answer questionnaires via a link they will receive via e-mail at baseline and 3, 6, 12 and 24 months after inclusion in the study.
Cow's milk protein allergy (CMA) is an immune-mediated reaction which can either be antibody-driven (IgE-mediated) or cell-mediated (non-IgE-mediated) or mixed, and elicits reactions which are reproducible upon re-exposure to cow's milk proteins. Estimates of CMA prevalence depend on the diagnosis procedure used; recently, a meta-analysis stated an overall pooled estimate for 0-1 year old infants of point prevalence of CMA reported by parents of 4.2% (95 % confidence interval (CI): 3.2-5.4), decreasing to 2.0% (1.5-2.5) when CMA was proven with a double-blind placebo-controlled food challenge (DBPCFC). CMA manifests through diverse and non-specific symptoms, rendering the CMA diagnosis very difficult. CMA symptoms mainly concern the cutaneous area, the respiratory and gastrointestinal tracts but can also be general. The DBPCFC is therefore considered as the gold standard for the CMA diagnosis. CMA management consists in the elimination of any source of non-hydrolyzed cow' milk protein from the diet, which is mainly achieved in children by using extensively hydrolyzed formulae (eHFs). As the molecular weight profile of a given hydrolysate cannot predict potential reaction in a given child, the American Academy of Pediatrics recommended that tolerance/hypoallergenicity of any formula intended for children with CMA should be clinically tested in that specific population. The purpose of this study is to demonstrate the hypoallergenicity of a new liquid hydrolyzed casein-based formula (Investigational Formula) in the management of infants and children with CMA.
To improve accuracy and take out human error, Hippo Dx previously developed S.P.A.T., an automated skin prick test. Now, Hippo Dx will develop and evaluate a S.P.A.T. artificial intelligence (AI) medical software to support physicians in the read out of the test results from an automated skin prick test. In this study 700 images will be collected to develop the AI model, an additional 200 images will be collected to evaluate performance of the AI model. In a last independent cohort of 100 patients, performance of read-out by the physician will be compared with read out by the physician supported by the S.P.A.T. AI medical software. The primary endpoint is the accuracy of the maximal wheal size measurement by S.P.A.T. AI versus the maximal wheal size measurement by the physician. It is a prospective multicentric study that will include 1000 study participants from different countries.
This study will assess the effect of taking vitamin C on allergy skin test.
The goal of this clinical trial is to evaluate the off-target/non-specific effects of the measles-mumps-rubella (MMR) vaccine in children.
This is a follow-up study of a randomised clinical trial, called TEMPO (a double-blind randomized clinical trial investigating infant formula and human breast milk consumption), in which infants participated in their first year of life. The investigators like to know if these children develop allergies or infections in childhood and whether their feeding pattern in infancy plays a role.
Anaphylaxis is a severe life-threatening reaction following exposure to an antigen. Its incidence is progressively increasing in the general population over years, especially among children. The diagnosis can be difficult, and recommendations for follow up and prescription for an emergency kit are rarely provided after emergency visit. The Investigators will evaluate the management of pediatric anaphylaxis and clinical signs of allergy in the pediatric emergency department of Montpellier University Hospital
Mold allergies are becoming increasingly important among the population. Increasing amounts of fungal spores are analyzed in air-samples because of urbanization, industrialization of food products and climate change. Mold also grows indoor and hence lead to additional health complaints. Alternaria alternata, and its only major allergen Alt a 1, is the most important fungus for allergy sufferers. Alternaria alternata can not only cause allergic symptoms but can also cause intensified asthmatic symptoms. Besides Alternaria alternata, there are over 700 other species of the genus Alternaria. The influence of these other species on allergic symptoms is poorly understood. Furthermore, prevalence and incidence of an allergy to Alternaria alternata among the Austrian population is not known. Estimates range between 1-5% among the Austrian population. This study aims to further investigate the incidence and characteristics of an allergy to Alternaria in Austria. This will be investigated with the help of participants (50 Alternaria allergy sufferers and 20 non allergic participants), spore counts in Austria and crowd-sourced symptom data.