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| Anaphylaxis Anaphylactic Reaction | Shock, Anaphylactic | Anaphylactic Reactions | Anaphylactic Shock | Reaction, Anaphylactic | Reactions, Anaphylactic An acute hypersensitivity reaction due to exposure to a previously encountered antigen. The reaction may include rapidly progressing urticaria, respiratory distress, vascular collapse, systemic shock, and death. | |
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