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Anaphylaxis in Brazil between 2011 and 2019

机译：Anaphylaxis in Brazil between 2011 and 2019

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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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