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Journal Articles Clinical and Experimental Allergy Year : 2022

Anaphylaxis in Brazil between 2011 and 2019

Abstract

Background: there is a lack of population-based studies of anaphylaxis from low-and middle-income countries. This hampers public health planning and investments and may influence availability of adrenaline auto-injectors. Objective: we conducted the first national population-based study of anaphylaxis hospitalization in Brazil. Methods: descriptive study using routinely reported data to the Brazilian Hospital Information System for the years 2011-2019. Information available is coded based on the International Classification of Diseases (ICD)-10 and covers main cause of hospitalization (primary cause) and any conditions contributing to it (secondary cause). Results: over 9 years, we identified 5716 admissions due to anaphylaxis for all causes. The average hospitalization rate related to anaphylaxis was 0.71/100,000 population per year, with a 2.4% (95% CI 1.9%, 2.9%) increase per annum over the study period. Admissions were more frequent among females (52.8%), except for cases due to insect sting. Most admissions occurred in adulthood, from 30 to 59 years (36.3%) but 13.8% in preschool children (0-4 years). There were more young children admitted for food-related anaphylaxis, and more adults admitted for drug/iatrogenic-related anaphylaxis. There were 334 cases (5.8% of admissions) of fatal anaphylaxis over the study period, with increased case fatality rate over time. Conclusions and clinical relevance: this is the first study of anaphylaxis hospital admissions using nation-wide data from a low- or middle-income country. Hospital admissions and fatalities from anaphylaxis in Brazil appear to be increasing.
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Dates and versions

hal-03779229 , version 1 (16-09-2022)

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Attribution - NonCommercial - NoDerivatives

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Luciana Kase Tanno, Nicolas Molinari, Isabella Annesi‐maesano, Pascal Demoly, Ana Luiza Bierrenbach. Anaphylaxis in Brazil between 2011 and 2019. Clinical and Experimental Allergy, 2022, 52 (9), pp.1071 - 1078. ⟨10.1111/cea.14193⟩. ⟨hal-03779229⟩
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