Moving Biosurveillance Beyond Coded Data Using AI for Symptom Detection From Physician Notes: Retrospective Cohort Study

Andrew J McMurry   ^{1, 2} , PhD ;   Amy R Zipursky   ^{1, 3} , MD, MBI ;   Alon Geva   ^{1, 4, 5} , MD, MPH ;   Karen L Olson   ^{1, 2} , PhD ;   James R Jones   ¹ , MPhil ;   Vladimir Ignatov   ¹ , MFA ;   Timothy A Miller   ^{1, 2} , PhD ;   Kenneth D Mandl   ^{1, 2, 6} , MD, MPH

¹ Computational Health Informatics Program, Boston Children's Hospital, Boston, MA, United States

² Department of Pediatrics, Harvard Medical School, Boston, MA, United States

³ Division of Pediatric Emergency Medicine, Department of Pediatrics, The Hospital for Sick Children, Toronto, ON, Canada

⁴ Division of Critical Care Medicine, Department of Anesthesiology, Critical Care, and Pain Medicine, Boston Children's Hospital, Boston, MA, United States

⁵ Department of Anaesthesia, Harvard Medical School, Boston, MA, United States

⁶ Department of Biomedical Informatics, Harvard Medical School, Boston, MA, United States