A U.S. Air Force Airman with the 108th Wing, New Jersey Air National Guard, holds nasal swab and vial during COVID-19 RT-PCR… https://www.rawpixel.com/image/4031778/photo-image-face-mask-coronavirusFree Image from public domain licenseU.S. Army Pfc. Erick S. Alulema, combat medic specialist, Headquarters and Headquarters Troop, 102nd Cavalry Regiment, New… https://www.rawpixel.com/image/4031775/photo-image-face-mask-covidFree Image from public domain licenseU.S. Army Pfc. Erick S. Alulema, combat medic specialist, Headquarters and Headquarters Troop, 102nd Cavalry Regiment, New… https://www.rawpixel.com/image/4031950/photo-image-covid-people-doctorFree Image from public domain licenseU.S. Army Pfc. Erick S. Alulema, combat medic specialist, Headquarters and Headquarters Troop, 102nd Cavalry Regiment, New… https://www.rawpixel.com/image/4031783/photo-image-covid19-person-doctorFree Image from public domain licenseU.S. Army Pfc. Erick S. Alulema, combat medic specialist, Headquarters and Headquarters Troop, 102nd Cavalry Regiment, New… https://www.rawpixel.com/image/4031772/photo-image-face-mask-covidFree Image from public domain licenseBoer War: Queen Victoria presenting flowers to a wounded soldier during a visit to the Herbert hospital, Woolwich. Halftone… https://www.rawpixel.com/image/13959663/image-cartoon-flowers-personFree Image from public domain licenseBoer War: a hospital ward with soldiers wounded during the siege of Kimberley, South Africa. Process print after Bennett… https://www.rawpixel.com/image/13985237/image-person-hospital-doctorFree Image from public domain licenseBoer War: Queen Victoria presenting flowers to a wounded soldier during a visit to the Herbert hospital, Woolwich. Halftone… https://www.rawpixel.com/image/13978187/image-flowers-person-bookFree Image from public domain licenseA U.S. Air Force Airman with the 108th Wing, New Jersey Air National Guard, places a specimen bag into a container during… https://www.rawpixel.com/image/4035274/photo-image-coronavirus-person-doctorFree Image from public domain licenseA U.S. Air Force Airman with the 108th Wing, New Jersey Air National Guard, dons fresh gloves during COVID-19 RT-PCR testing… https://www.rawpixel.com/image/4035237/photo-image-coronavirus-person-doctorFree Image from public domain licenseBoer War: wounded army officers on the deck of a hospital ship, and a piece from an armoured train. Halftone, c. 1900. https://www.rawpixel.com/image/14015235/image-person-hospital-clothingFree Image from public domain license