Publications by authors named "Jennifer Gerdts"

Background: Anaphylaxis is a life-threatening, systemic allergic reaction. This study aims to compare anaphylactic triggers, clinical presentation and management between elderly (≥65 years old) and non-elderly adults.

Methods: Data from the Cross-Canada Anaphylaxis Registry (C-CARE) from April 2011 to May 2024 was collected, spanning five emergency departments (EDs) and one emergency medical service (EMS) across three Canadian provinces.

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Background: Food allergy imposes considerable financial costs on families, but few programs are available in Canada to offset these costs. To fill this gap, we developed, piloted, and evaluated a program designed to address the financial burden of food allergy.

Methods: The current study employed the use of an unblinded, crossover design.

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Background: Providing training to school personnel on how to prevent, recognize, and manage anaphylaxis is critical. Asynchronous e-learning (where instructional material is available on-demand) may be well-suited to help with the implementation, scale, and dissemination of this training. In this paper, we report on the design, pilot testing, widespread implementation, and evaluation of an online course for school personnel.

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GALEN and EFA propose minimum specifications for all industrialised countries/regions to work towards to support students with food allergies in educational settings. We reviewed research and legislation and gained feedback from over 100 patient and professional groups. We built shared expectations around: 1.

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Background: Despite the widespread use of precautionary allergen labelling (PAL) by manufacturers, PAL is not always used consistently and can be a source of misinterpretation by consumers and allergists. Although its use is not specifically regulated in Canada, some voluntary guidelines exist. The aims of this study were to investigate allergic consumers' and clinicians' understanding of PAL, to describe consumers' attitudes towards products with PAL, and to examine recommendations given by clinicians to their patients about these products.

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Article Synopsis
  • The review covers the genetic and epigenetic factors related to food allergies, including their inheritance and the advantages and limitations of study methods.
  • Genome-wide association studies have identified 16 significant genetic variants linked to food allergies, often overlapping with other allergic conditions.
  • The article emphasizes the importance of integrating genetic and epigenetic data for understanding disease mechanisms and suggests future implications for predicting food allergy risks and responses to treatment.
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This Anaphylaxis Manifesto calls on communities to prioritise 10 practical actions to improve the lives of people at risk of serious allergic reactions. The Global Allergy and Asthma European Network and the European Federation of Allergy and Airways Diseases Patients' Associations (EFA) compiled patient-centric priorities. We used qualitative consensus methods, research evidence and feedback from over 200 patient groups, stakeholder organisations and healthcare professionals.

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Article Synopsis
  • Anaphylaxis is a severe and life-threatening allergic reaction commonly triggered by food, venom, or drugs, and this study examines differences in symptoms and treatment based on the specific triggers in adults.
  • The research involved a cross-sectional study with 1,135 adults from multiple emergency departments in Canada, using regression models to analyze symptoms and management related to different types of anaphylaxis, including drug-induced and various food-induced reactions.
  • Key findings show that drug-induced anaphylaxis is linked to hypotension, while nut-induced anaphylaxis is particularly associated with the increased use of outpatient antihistamines, indicating differing management strategies based on the type of allergen involved.
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  • IgE-mediated food allergies are the most common type, causing quick and serious reactions that affect patients' and caregivers' lives.
  • Omalizumab is a humanized monoclonal antibody that binds to IgE, reducing allergic reactions, and has been approved by the FDA for treating these food allergies.
  • The GALEN ANACARE Consensus Statement supports omalizumab's use based on a systematic review and expert agreement, noting it is currently the only drug that can significantly reduce IgE-mediated food allergic reactions, although more evidence is needed for stronger guideline recommendations.
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Article Synopsis
  • Precautionary Allergen Labelling (PAL) is used to warn people about possible allergens in food that could affect those with allergies.
  • The World Allergy Organization found that PAL is not consistently regulated, which makes it confusing for people with food allergies.
  • There are discussions among global organizations to create better rules for PAL so that it is clear and helpful for everyone, but there are still some challenges to making these rules work everywhere.
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Background: Previous guidelines recommend prompt epinephrine administration, followed by observation in the emergency department (ED). The need for transfer in all cases of anaphylaxis has recently been challenged.

Objective: To evaluate the need for additional ED treatment among children with anaphylaxis who received prehospital epinephrine.

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  • Households managing food allergies, particularly dairy allergies in young children, experience higher food costs and challenges with food security, prompting the development of a specialized food supplement program.
  • A pilot program in Winnipeg provided eight families with biweekly deliveries of allergen-friendly foods, aimed at assessing impacts on food costs, security, and caregiver mental health over six months.
  • Findings showed a slight increase in direct food costs but a significant reduction in indirect costs, specifically costs associated with lost time due to food allergy management, although overall food security and caregiver well-being saw minimal changes.
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() is a telementoring learning model to increase community capacity for autism-related health care. Seventy-seven pediatric providers (mostly primary care, seeing exclusively Medicaid patient populations) enrolled in 1 year of . Analysis of self-report surveys showed a significant increase in autism diagnoses made by ECHO providers after 1 year, (1, 65) = 7.

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Background: Egg is the third most common food allergy in children; however, data on pediatric egg-induced anaphylaxis are sparse.

Objective: To describe the clinical characteristics, management, and outcomes of pediatric egg-induced anaphylaxis.

Methods: Children presenting with anaphylaxis were recruited from 13 emergency departments as part of the Cross-Canada Anaphylaxis Registry, from which data on anaphylaxis triggered by egg were extracted.

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Article Synopsis
  • Cow's milk is a prevalent allergen in children, causing about 10% of anaphylactic reactions, and can lead to severe health risks.
  • Data from 2011 to 2023 showed that prehospital epinephrine use can lower the need for multiple doses in the emergency department, particularly among younger children.
  • The study highlights that children under 5 often have milder reactions compared to older kids, with symptoms like wheezing and vomiting being more common in milk-induced cases than with other food allergies.
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  • Epinephrine is really important for treating severe allergic reactions called anaphylaxis, but many people are using other medicines like antihistamines and steroids instead.
  • A study looked at how these different treatments worked by collecting information from thousands of patients with anaphylaxis in Canada and Israel.
  • The results showed that using epinephrine before getting to the hospital helped reduce serious problems during the allergic reaction, while antihistamines also seemed to help, but steroids made patients need more fluids when they arrived at the emergency room.
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The market share of foods carrying labels suggesting absence of animal ingredients has significantly increased in recent years. The purpose of this study was to document the purchasing behaviour of egg- or milk-allergic consumers vis-à-vis food marketed as "vegan" and "plant-based", and to evaluate the associated allergenic risk. A survey was conducted among egg- and milk-allergic consumers and revealed that 86% (margin of error 5.

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Anaphylaxis has occurred in preschools/schools yet there are no consistent food allergy (FA) management practices in early learning and childcare centres (ELCC) across jurisdictions. Presently, there are no reviews that have synthesized FA-related knowledge and management practices within ELCC. We aimed to perform a scoping review of FA management in ELCC, and report on perceived gaps or barriers.

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To assess knowledge of Canadian dietitians on the topics of food allergy and food allergy prevention guidelines, including introduction of allergenic solids to infants at risk of food allergy. An online survey was distributed via email listservs targeting Canadian dietitians. In total, 144 of 261 dietitians completed the survey (60.

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Background: Children with food allergy, and their families experience substantial burdens because of efforts necessary to minimize the risk of anaphylaxis. To this end, peer-to-peer education is paramount. Food Allergy Canada offers an online, peer-to-peer mentoring program.

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Background: Pediatric food allergy is associated with excess familial food costs compared to families without allergy. Since the start of the COVID-19 pandemic, food prices have increased substantially.

Objective: To understand the temporal pattern of food insecurity amongst Canadian families with food allergy from the year prior to the pandemic, through May 2022.

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For food-allergic patients, hypoallergenic formulas (HFs) are medically indicated, often a primary component of the diet and essential for patient safety, health, nutrition, and overall well-being. Yet, food allergy is not included among the conditions mandated for coverage under federal health programs and private health insurance. The 2022 infant formula crisis has affected many North American families and has particularly influenced patients with food allergies who rely on a limited number of safe HF brands to safely meet their nutritional needs for growth and development.

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