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Time trends in Australian hospital anaphylaxis admissions in 1998-1999 to 2011-2012. | LitMetric

Time trends in Australian hospital anaphylaxis admissions in 1998-1999 to 2011-2012.

J Allergy Clin Immunol

The Royal Children's Hospital, Melbourne, Australia; Murdoch Childrens Research Institute, Melbourne, Australia; Department of Paediatrics, University of Melbourne, Melbourne, Australia.

Published: August 2015

AI Article Synopsis

  • Studies show that childhood food allergies and anaphylaxis have risen significantly since the early 1990s, but this research aims to see if that increase continued after 2004-2005.* -
  • From 2005 to 2012, hospital admissions for food-related anaphylaxis increased from 5.6 to 8.2 per 100,000 people per year, with the most affected age group being children under 5.* -
  • The increase in food-related anaphylaxis is evident across all ages, with notable growth in the 5 to 14 age group, suggesting an emerging risk among older children and teens, contrary to past trends focused on younger children.*

Article Abstract

Background: Studies from the United Kingdom, the United States, and Australia have reported increased childhood food allergy and anaphylaxis prevalence in the 15 years after 1990.

Objective: We sought to examine whether childhood food allergy/anaphylaxis prevalence has increased further since 2004-2005.

Methods: We examined hospital anaphylaxis admission rates between 2005-2006 and 2011-2012 and compared findings with those from 1998-1999 to 2004-2005.

Results: Overall population food-related anaphylaxis admission rates (per 10(5) population per year) increased from 5.6 in 2005-2006 to 8.2 in 2011-2012 (a 1.5-fold increase over 7 years). The highest rates occurred in children aged 0 to 4 years (21.7 in 2005-2006 and 30.3 in 2011-2012, a 1.4-fold increase), but the greatest proportionate increase occurred in those aged 5 to 14 years (5.8-12.1/10(5) population/y, respectively, a 2.1-fold increase) compared with those aged 15 to 29 years and 30 years or older (a 1.5- and 1.3-fold increase, respectively). Not only did absolute food-related anaphylaxis admissions increase, but the modeled year-on-year rate of increase in overall food-related anaphylaxis admissions also increased over time from an additional 0.35 per 10(5) population/y in 1998-1999 (all ages) to 0.49 in 2004-2005 and 0.63 in 2011-2012 (P < .001).

Conclusions: Food-related anaphylaxis has increased further in all age groups since 2004-2005. Although the major burden falls on those aged 0 to 4 years, there is preliminary evidence for a recent acceleration in incidence rates in those aged 5 to 14 years. This contrasts with the previous decade in which the greatest proportionate increase was in those aged 0 to 4 years. These findings suggest a possible increasing burden of disease among adolescents and adults who carry the highest risk for fatal anaphylaxis.

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Source
http://dx.doi.org/10.1016/j.jaci.2015.05.009DOI Listing

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