Efren Saldivar was a California respiratory therapist whose patients appeared to die at unusually high rates for years before suspicions finally reached law enforcement. Known as the “Angel of Death,” Saldivar later confessed to multiple killings, raising difficult questions about patient safety, hospital oversight, and how warning signs can be missed in critical care environments.

Sources:

https://www.nlm.nih.gov/exhibition/visibleproofs/galleries/cases/saldivar_image_5.html

https://www.llnl.gov/article/27401/fsc-analysis-may-seal-angels-fate

https://murderpedia.org/male.S/s/saldivar-efren.htm

https://www.oxygen.com/license-to-kill/crime-time/efren-saldivar-respiratory-therapist-magic-syringe-murders

https://www.theguardian.com/world/2001/jan/11/duncancampbell

https://www.washingtonpost.com/archive/politics/1998/03/30/calif-police-draw-up-list-of-possible-patient-victims/ddf1a415-a72f-4a18-8e29-eda6fdb5a123/

https://www.cbsnews.com/news/hospital-worker-admits-40-50-killings/

https://www.cbsnews.com/news/angel-of-death-pleads-guilty/

https://www.cbsnews.com/news/angel-of-death-to-be-arraigned/

https://crimelibrary.org/notorious_murders/angels/efren_saldivar/