Spike in new nut anaphylaxis in children at Halloween and Easter

September 21, 2020

A new study looking at the link between peanut and tree-nut anaphylaxis in children and holidays found spikes at Halloween and Easter. The study, published in CMAJ (Canadian Medical Association Journal) found that most were previously unknown allergies, calling for increased awareness http://www.cmaj.ca/lookup/doi/10.1503/cmaj.200034.

"Identifying certain times associated with an increased risk of anaphylaxis could help to raise community awareness, support and vigilance," write Dr. Melanie Leung, 4th-year medical student at McGill University and Dr. Moshe Ben-Shoshan, McGill University Health Centre, Montreal, Quebec, with coauthors. "This information would identify the best timing for public awareness campaigns to prevent allergic reactions."

Researchers compared anaphylaxis at Halloween, Easter, Christmas, Diwali, Chinese New Year and Eid al-Adha.

The study included 1390 patients visiting participating pediatric emergency departments between 2011 and 2020 in 4 Canadian provinces: Quebec, Ontario, Newfoundland and Labrador, and British Columbia. The median age of patients was 5.4 years and 62% were boys.

For peanut-triggered anaphylaxis, there was an 85% increase in daily average cases during Halloween and a 60% increase during Easter compared with the rest of the year. For anaphylaxis triggered by unknown nuts, there was a 70% increase during Halloween and Easter compared with the rest of the year. However, the researchers did not find an increase at Christmas, Diwali, Chinese New Year or Eid al-Adha.

"The difference in the anaphylaxis incidence among holidays may have been due to the social setting in which each holiday takes place," write the authors. "At Halloween and Easter, children often receive candies and other treats from people who may be unaware of their allergies. The absence of such an association at Christmas may be because Christmas is a more intimate celebration among family members and close friends, who are more vigilant regarding allergen exposure."

Canadian labelling may also be a factor, as individual packages of candies and snacks, which are exempt from labelling requirements listing ingredients, are popular at Halloween and Easter.

The authors suggest education and awareness may help reduce the risk of anaphylaxis.

"Our findings suggest that educational tools to increase vigilance regarding the presence of potential allergens is required among children with food allergies, their families and lay people interacting with children who have food allergies. Newer strategies targeting intervals associated with high anaphylaxis risk are required."
-end-
Visual abstract: https://www.cmaj.ca/lookup/doi/10.1503/cmaj.200034/tab-related-content

"Risk of peanut- and tree-nut-inducted anaphylaxis during Halloween, Easter and other cultural holidays in Canadian children" is published September 21, 2020.

Canadian Medical Association Journal

Related Allergies Articles from Brightsurf:

With or without allergies, outcomes similar for hospitalized patients with COVID-19
A new study being presented at this year's virtual American College of Allergy, Asthma and Immunology (ACAAI) Annual Scientific Meeting examines hospital data to determine if those with allergic conditions had more severe COVID-related disease than those without.

Links between parents' and children's asthma and allergies
New research published in Clinical & Experimental Allergy found that, compared with a father's traits related to allergies and asthma, a mother's traits create a higher risk that a child will develop these same traits in early childhood.

New insight into allergies could improve diagnosis and treatment
A study led by investigators at Massachusetts General Hospital point to a potential marker of these conditions and a new therapeutic strategy.

Got seasonal allergies? Beetles could help
Allergies caused by the common ragweed, Ambrosia artemisiifolia, impact millions, and in Europe alone, around 13.5 million people suffer with symptoms, resulting in 7.4 billion Euros worth of health costs per year, according to the research.

Drinking green tea may help with food allergies
Drinking green tea increases Flavonifractor plautii in the gut, which in turn suppresses an allergic food immune response.

Breastfeeding and risks of allergies and asthma
In an Acta Paediatrica study, exclusive breastfeeding for the first 3 months was linked with a lower risk of respiratory allergies and asthma when children reached 6 years of age.

Search for the source of antibodies would help treat allergies
Researchers of Sechenov University together with their colleagues from Russia and Austria summarised everything known about cells producing group E antibodies.

Changes in onset of spring linked to more allergies across the US
Human-induced climate change is disrupting nature's calendar, including when plants bloom and the spring season starts, and new research from the University of School of Public Health suggests we're increasingly paying the price for it in the form of seasonal allergies.

Prenatal allergies prompt sexual changes in offspring
A single allergic reaction during pregnancy prompts sexual-development changes in the brains of offspring that last a lifetime, new research suggests.

Food allergies: A research update
Families impacted by food allergies will need psychosocial support as they try promising new therapies that enable them to ingest a food allergen daily or wear a patch that administers a controlled dose of that food allergen.

Read More: Allergies News and Allergies Current Events
Brightsurf.com is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to Amazon.com.