Anaphylaxis, known to be a sudden and potentially life-threatening allergic reaction, seems to be increasing among children, according to a new study led by a team at the Research Institute of the Ï㽶ÊÓƵ Health Centre (RI-MUHC). The findings, published this week in the Journal of Allergy and Clinical Immunology (JACI), reveal that the percentage of emergency department (ED) visits due to anaphylaxis doubled over a four-year period based on data collected from the Montreal Children’s Hospital of the MUHC (MCH-MUHC).