Women wearing surgical masks during the influenza epidemic, Brisbane (1919). Original image from State Library of… https://www.rawpixel.com/image/2298584/free-photo-image-vintage-black-and-white-covidFree Image from public domain licenseChest x-ray of a patient with mycoplasma pneumonia. Original image sourced from US Government department: Public Health… https://www.rawpixel.com/image/2288354/free-photo-image-ray-medical-sickFree Image from public domain licenseChest X–ray of patient with influenza during World War I. Original image from National Museum of Health and Medicine.… https://www.rawpixel.com/image/2298602/free-photo-image-xray-vintage-black-and-whiteFree Image from public domain licenseSt. Louis Red Cross Motor Corps on duty during influenza epidemic (1918). Original from Library of Congress. Digitally… https://www.rawpixel.com/image/2301122/free-photo-image-vintage-spanish-flu-womanFree Image from public domain licenseU.S. New Haven (AH-12) awaits Marine helicopters bringing in wounded from the front lines, Korea. https://www.rawpixel.com/image/3393984/free-photo-image-people-creative-black-and-whiteFree Image from public domain licenseUltrastructural morphology shown by coronavirus. Original image sourced from US Government department: Public Health Image… https://www.rawpixel.com/image/2282536/free-photo-image-covid-science-virusFree Image from public domain licenseFour test tubes of bacterial microorganism. Original image sourced from US Government department: Public Health Image… https://www.rawpixel.com/image/2288552/free-photo-image-laboratory-test-tube-science-labFree Image from public domain licenseUltrastructural morphology exhibited by coronaviruses similar to COVID-19 which became pandemic. https://www.rawpixel.com/image/2282543/free-photo-image-covid-virus-coronavirusFree Image from public domain licenseAmerican Red Cross canteen workers taking food for family infected with the flu, Charlotte, North Carolina (1918). Original… https://www.rawpixel.com/image/2301114/free-photo-image-vintage-virus-foodFree Image from public domain licenseInterior of a hospital ward at the Base Hospital, Camp Jackson, South Carolina, during the influenza epidemic (1918).… https://www.rawpixel.com/image/2298592/free-photo-image-pandemic-covid-interiorFree Image from public domain licenseMERS Coronavirus Particle–Middle East Respiratory Syndrome Coronavirus particle envelope proteins immunolabeled with… https://www.rawpixel.com/image/2294161/free-photo-image-covid-virus-scienceFree Image from public domain licenseA medical illustration of drug–resistant, Neisseria gonorrhoeae bacteria. Original image sourced from US Government… https://www.rawpixel.com/image/2288553/free-photo-image-bacteria-virus-biologyFree Image from public domain licenseEmergency hospital during influenza epidemic, Camp Funston, Kansas (1918). Original image from National Museum of Health and… https://www.rawpixel.com/image/2298586/free-photo-image-spanish-flu-pandemic-covidFree Image from public domain licenseVolunteer nurses from The American red cross during flu epidemic (1918). Original image from Oakland Public Library.… https://www.rawpixel.com/image/2298625/free-photo-image-covid-pandemic-blackFree Image from public domain licenseWalter Reed Hospital flu ward (ca. 1910–1920). Original from Library of Congress. Digitally enhanced by rawpixel. https://www.rawpixel.com/image/2301131/free-photo-image-spanish-flu-nurse-1918Free Image from public domain licenseTwo chest x-rays in the case of a child with a case of mycoplasma pneumonia. Original image sourced from US Government… https://www.rawpixel.com/image/2288367/free-photo-image-ray-pneumonia-public-domainFree Image from public domain licenseA 3D graphic representation of a spherical-shaped, measles virus particle, that was studded with glycoprotein tubercles. https://www.rawpixel.com/image/2288308/free-photo-image-measles-virus-healthFree Image from public domain licenseA 3D graphical representation of a number of Rotavirus virions, set against a black background. https://www.rawpixel.com/image/2288315/free-photo-image-virus-public-domain-bacteriaFree Image from public domain licenseC–46 air evacuation during World War II from Manila, Philippine Islands. Patients in bunks in a plane. Nurse in… https://www.rawpixel.com/image/2298594/free-photo-image-world-war-vintage-peopleFree Image from public domain licenseA worker wearing a protective mask and suit. Original image sourced from US Government department: Public Health Image… https://www.rawpixel.com/image/2288458/free-photo-image-cleaning-clean-sprayFree Image from public domain licenseAmerican Red Cross canteen staff (1919). Original from Library of Congress. Digitally enhanced by rawpixel. https://www.rawpixel.com/image/2301129/free-photo-image-women-nurse-spanish-fluFree Image from public domain licenseAn electron microscopic (SEM) image, depicts a blue-colored, human white blood cell, (WBC) known specifically as a… https://www.rawpixel.com/image/2288485/free-photo-image-blood-cells-bacteriaFree Image from public domain licenseNovel Coronavirus SARS-CoV-2–Colorized scanning electron micrograph of an apoptotic cell (blue) infected with SARS-COV… https://www.rawpixel.com/image/2294134/free-photo-image-covid-virus-scienceFree Image from public domain licenseMERS Coronavirus Particles–Colorized transmission electron micrograph showing particles of the Middle East respiratory… https://www.rawpixel.com/image/2294178/free-photo-image-virus-covid-19-covidFree Image from public domain licenseSandia biochemist and virologist are conducting research using CRISPR-based technology to genetically engineer a deployable… https://www.rawpixel.com/image/3322298/free-photo-image-covid-virus-dna-scienceFree Image from public domain licenseSt. Louis Red Cross Motor Corps on duty during influenza epidemic (1918). Original from Library of Congress. Digitally… https://www.rawpixel.com/image/2301120/free-photo-image-spanish-flu-nurse-pandemicFree Image from public domain licenseOn the balcony at Evian ARC hospital. Anaemic children from Paris dispensary (1918). Original from Library of Congress.… https://www.rawpixel.com/image/2301116/free-photo-image-children-vintage-child-girlFree Image from public domain licenseLab technician adding a solution to an Enzyme–Linked Immunosorbent Assay (ELISA) plate Original image sourced from US… https://www.rawpixel.com/image/2288391/free-photo-image-laboratory-medical-healthFree Image from public domain licenseOperation at Herrin Hospital (private), Herrin, Illinois (1939). Original from Library of Congress. Digitally enhanced by… https://www.rawpixel.com/image/2301132/free-photo-image-surgery-medical-spanish-fluFree Image from public domain licenseOperation during the Korean War with the 11th Evacuation Hospital (ca. 1950–1954). Original image from National Museum… https://www.rawpixel.com/image/2298622/free-photo-image-doctor-surgery-warFree Image from public domain licenseNovel Coronavirus SARS-CoV-2–This scanning electron microscope image shows SARS-CoV-2 (yellow)—also known as… https://www.rawpixel.com/image/2294163/free-photo-image-virus-microbiology-scienceFree Image from public domain licenseThe 1950s historical photograph of an extreme air pollution event at Salt Lake City, Utah. Original image sourced from US… https://www.rawpixel.com/image/2288462/free-photo-image-street-vintage-smogFree Image from public domain licenseScientist analyzing samples from industrial hygiene investigations. Original image sourced from US Government department:… https://www.rawpixel.com/image/2288461/free-photo-image-science-laboratory-scientistFree Image from public domain licenseA medical illustration of clindamycin–resistant group B Streptococcus bacteria. Original image sourced from US… https://www.rawpixel.com/image/2288537/free-photo-image-bacteria-science-labFree Image from public domain licenseN95 type face masks or respirators. Original image sourced from US Government department: Public Health Image Library… https://www.rawpixel.com/image/2288512/free-photo-image-mask-face-coronavirusFree Image from public domain licenseInterior of Red Cross House at U.S. General Hospital during influenza epidemic, New Heaven, Connecticut (ca. 1918). Original… https://www.rawpixel.com/image/2301123/free-photo-image-spanish-flu-plague-covidFree Image from public domain licenseA 100X photomicrograph magnification of histopathologic morphology associated with the agriculturally–related… https://www.rawpixel.com/image/2288356/free-photo-image-microscope-antibody-virusFree Image from public domain licenseHealthcare workers donning a pair of protective goggles and protective equipment. Original image sourced from US Government… https://www.rawpixel.com/image/2288386/free-photo-image-safety-pandemic-workerFree Image from public domain licenseWhite coronavirus under a Microscope. Original image sourced from US Government department: Public Health Image Library… https://www.rawpixel.com/image/2282546/free-photo-image-cell-science-virusFree Image from public domain licenseTwo hands, viewed through x-ray. Photoprint from radiograph after Sir Arthur Schuster, 1896. https://www.rawpixel.com/image/13957681/photo-image-hand-hospital-public-domainFree Image from public domain licenseFree mental health crossword background, public domain CC0 photo. https://www.rawpixel.com/image/5924512/photo-image-background-aesthetic-public-domainFree Image from public domain licenseU.S. Embarkation Camp, Pauillac, Gironde, France. Men lowering caskets into graves at the funerals of a soldier and a sailor… https://www.rawpixel.com/image/2298585/free-photo-image-funeral-black-and-white-graveFree Image from public domain licenseTransmission electron microscopic (TEM) image, revealed ultrastructural details exhibited by numerous, Coxiella burnetii… https://www.rawpixel.com/image/2288506/free-photo-image-science-biology-antibodyFree Image from public domain licenseSurgical nurse, Herrin Hospital (private), Herrin, Illinois (1939). Original from Library of Congress. Digitally enhanced by… https://www.rawpixel.com/image/2301133/free-photo-image-spanish-flu-hospital-nurseFree Image from public domain licenseOne of the wards for medical cases at Base Hospital, Dijon, France (1919). Original from Library of Congress. Digitally… https://www.rawpixel.com/image/2301121/free-photo-image-spanish-flu-history-pandemicFree Image from public domain licenseHospital train 64, Allery, France, unloading a hospital train full of influenza patients during World War I. Original image… https://www.rawpixel.com/image/2298623/free-photo-image-world-war-trainFree Image from public domain licenseVolunteer caregivers from The American red cross during flu epidemic (1918). Original image from Oakland Public Library.… https://www.rawpixel.com/image/2298582/free-photo-image-pandemic-vintage-influenzaFree Image from public domain licenseA photomicrograph of Candida albicans fungal spores. Original image sourced from US Government department: Public Health… https://www.rawpixel.com/image/2288324/free-photo-image-bacteria-cdc-microscopeFree Image from public domain licenseFemale clinician in the process of conducting a blood pressure examination on a patient. Original image sourced from US… https://www.rawpixel.com/image/2282418/free-photo-image-health-doctor-blood-pressureFree Image from public domain licenseUltrastructural morphology shown by coronavirus. Original image sourced from US Government department: Public Health Image… https://www.rawpixel.com/image/2282549/free-photo-image-virus-covid-scienceFree Image from public domain licenseOperation, Herrin Hospital (private), Herrin, Illinois (1939). Original from Library of Congress. Digitally enhanced by… https://www.rawpixel.com/image/2301119/free-photo-image-doctor-spanish-flu-historyFree Image from public domain licenseNurses at Floating hospital (ca. 1910–1915). Original from Library of Congress. Digitally enhanced by rawpixel. https://www.rawpixel.com/image/2301126/free-photo-image-nurse-spanish-flu-pandemic-1900Free Image from public domain licenseThe blacklegged ticks, Ixodes pacificus known for the zoonotic spirochetal bacteria, Borrelia burgdorferi. https://www.rawpixel.com/image/2288467/free-photo-image-tick-insect-animalFree Image from public domain licenseRaccoon, Procyon lotor, a vector in the transmission of rabies to humans and other animals. Original image sourced from US… https://www.rawpixel.com/image/2288472/free-photo-image-fox-animal-animals-public-domainFree Image from public domain licenseA medical illustration of drug–resistant, Streptococcus pneumoniae bacteria. Original image sourced from US Government… https://www.rawpixel.com/image/2288648/free-photo-image-biology-science-laboratoryFree Image from public domain licenseTransmission electron microscopic (TEM) image highlights the particle envelope of a single, spherical shaped, Middle East… https://www.rawpixel.com/image/2288502/free-photo-image-bacteria-virus-scienceFree Image from public domain licenseCarpenter and construction worker from Georgia who is recovering from flu (1940). Original from Library of Congress.… https://www.rawpixel.com/image/2301134/free-photo-image-sleep-black-and-white-vintage-photosFree Image from public domain licenseRed Cross Home Service arriving just in time to rescue this woman from the clutches of influenza (1918). Original from… https://www.rawpixel.com/image/2301124/free-photo-image-black-and-white-spanish-flu-historyFree Image from public domain licenseThe open neuropsychiatric ward, U.S. Naval Hospital. Guam, Marianas Islands (1954). Original image from National Museum of… https://www.rawpixel.com/image/2298607/free-photo-image-covid-ward-pandemicFree Image from public domain licenseThe open neuropsychiatric ward, U.S. Naval Hospital, Guam, Marianas Islands (1954). Original image from National Museum of… https://www.rawpixel.com/image/2298600/free-photo-image-hospital-black-and-white-vintageFree Image from public domain licenseBase Hospital 37, Dartford, England with tent during influenza epidemic. Original image from National Museum of Health and… https://www.rawpixel.com/image/2298604/free-photo-image-tent-black-and-white-vintage-photographyFree Image from public domain licenseMERS Coronavirus Particles–Colorized scanning electron micrograph of MERS virus particles (yellow) both budding and… https://www.rawpixel.com/image/2294208/free-photo-image-microbiology-microscope-virusFree Image from public domain licenseMERS Coronavirus Particles–Transmission electron micrograph of Middle East Respiratory Syndrome virusCoV particles… https://www.rawpixel.com/image/2294155/free-photo-image-microscope-medical-awarenessFree Image from public domain licensePhotomicrograph of a blood smear specimen. Original image sourced from US Government department: Public Health Image… https://www.rawpixel.com/image/2282493/free-photo-image-pink-blood-cell-intestinal-parasiteFree Image from public domain licenseAmerican Red Cross nurses (1917). Original from Library of Congress. Digitally enhanced by rawpixel. https://www.rawpixel.com/image/2301115/free-photo-image-spanish-flu-doctor-pandemicFree Image from public domain licenseNovel Coronavirus SARS-CoV-2–Colorized scanning electron micrograph of an apoptotic cell (green) heavily infected with… https://www.rawpixel.com/image/2294186/free-photo-image-science-medical-microbiologyFree Image from public domain licenseMERS Coronavirus Particles–Transmission electron micrograph of Middle East Respiratory Syndrome CoV particles found… https://www.rawpixel.com/image/2294226/free-photo-image-virus-microscope-micrographFree Image from public domain licenseA 3D graphical representation of a number of norovirus virions, set against a black background. https://www.rawpixel.com/image/2288339/free-photo-image-epidemic-biologyFree Image from public domain licenseA healthcare worker assessing a sick traveler at the airport. Original image sourced from US Government department: Public… https://www.rawpixel.com/image/2288329/free-photo-image-covid-airport-healthcareFree Image from public domain licenseA medical illustration of drug–resistant, Mycoplasma genitalium bacteria. Original image sourced from US Government… https://www.rawpixel.com/image/2288643/free-photo-image-laboratory-microscope-scienceFree Image from public domain licenseThree test tubes used in a Legionella pneumophila bacteria detection test. Original image sourced from US Government… https://www.rawpixel.com/image/2288395/free-photo-image-laboratory-photography-legionellaFree Image from public domain licenseA woman receiving an influenza vaccination at the Maternal and Child Hospital in Vientiane, Laos. Original image sourced… https://www.rawpixel.com/image/2282528/free-photo-image-vaccine-people-injectionFree Image from public domain licenseWoman sick on the sofa https://www.rawpixel.com/image/399806/sick-womanView licenseTired baby girl crying and rubbing her eyes https://www.rawpixel.com/image/3402996/premium-photo-image-baby-cry-adorableView licenseWoman suffering from migraine and headache https://www.rawpixel.com/image/3402972/premium-photo-image-alone-anxiety-common-coldView licenseHospital at Blackwell's Island. Original from Library of Congress. Digitally enhanced by rawpixel. https://www.rawpixel.com/image/2301125/free-photo-image-hospital-beds-spanish-flu-historyFree Image from public domain licenseU.S. Naval Hospital, Ward D-2. Guam, Marianas Islands (1954). Original image from National Museum of Health and Medicine.… https://www.rawpixel.com/image/2298595/free-photo-image-covid-pandemic-historical-old-photographyFree Image from public domain licenseNovel Coronavirus SARS-CoV-2–Colorized scanning electron micrograph of an apoptotic cell (tan) infected with SARS-COV… https://www.rawpixel.com/image/2294195/free-photo-image-science-awareness-background-covidFree Image from public domain licenseNovel Coronavirus SARS-CoV-2–This scanning electron microscope image shows SARS-CoV-2—also known as 2019-nCoV… https://www.rawpixel.com/image/2294200/free-photo-image-covid-covid-19-healthFree Image from public domain licenseA 440X photomicrograph magnification of a hematoxylin and eosin (H&E)–stained liver tissue specimen, revealed the… https://www.rawpixel.com/image/2288342/free-photo-image-liver-biology-microscopeFree Image from public domain licenseA dorsal view of a highly toxic black scorpion, Tityus trinitatis, which is native to Trinidad. https://www.rawpixel.com/image/2288469/free-photo-image-scorpion-insect-riskFree Image from public domain licenseGroup A Streptococcus (GAS), Streptococcus pyogenes bacteria, which were atop the surface of a human white blood cell (WBC)… https://www.rawpixel.com/image/2288304/free-photo-image-blood-cells-white-cell-streptococcusFree Image from public domain licenseA Petri dish culture plate, which had contained a growth medium of sheep blood agar (SBA), and which was inoculated with… https://www.rawpixel.com/image/2288447/free-photo-image-laboratory-bacteria-petri-dish-bloodFree Image from public domain licenseA Bald-faced hornet, Dolichovespula maculata. Original image sourced from US Government department: Public Health Image… https://www.rawpixel.com/image/2288452/free-photo-image-wasp-vector-baldFree Image from public domain licenseGreen coronavirus under a microscope. Original image sourced from US Government department: Public Health Image Library… https://www.rawpixel.com/image/2282449/free-photo-image-virus-science-greenFree Image from public domain licenseTracy (vicinity), California. Missouri family of five who are seven months from the drought area on U.S. Highway 99. "Broke… https://www.rawpixel.com/image/8718193/photo-image-vintage-public-domain-childrenFree Image from public domain licenseUSNS Mercy Sailors Conduct an Interventional Radiology Study and Procedure on a Patient https://www.rawpixel.com/image/3393972/free-photo-image-covid-hospital-patientFree Image from public domain licenseOperation at Provident Hospital on South Side of Chicago, Illinois (1941). Original from Library of Congress. Digitally… https://www.rawpixel.com/image/2301130/free-photo-image-surgery-doctor-spanish-fluFree Image from public domain licenseNovel Coronavirus SARS-CoV-2–This scanning electron microscope image shows SARS-CoV-2—also known as 2019-nCoV… https://www.rawpixel.com/image/2294181/free-photo-image-microbiology-medical-electron-micrographFree Image from public domain licenseNovel Coronavirus SARS-CoV-2–This transmission electron microscope image shows SARS-CoV-2, the virus that causes COVID… https://www.rawpixel.com/image/2294150/free-photo-image-microscope-public-domain-awarenessFree Image from public domain licenseNovel Coronavirus SARS-CoV-2–Transmission electron micrograph of SARS-CoV-2 virus particles, isolated from a patient.… https://www.rawpixel.com/image/2294138/free-photo-image-awareness-background-covid-cellFree Image from public domain license