People wearing masks to prevent coronavirus characters vector https://www.rawpixel.com/image/2284101/free-illustration-vector-covid-symptom-colorful-patch-herd-immunityView licensePeople wearing masks to prevent coronavirus characters element transparent png https://www.rawpixel.com/image/2284722/free-illustration-png-human-social-distancing-public-healthcareView licenseA valentine message 1Author(s): Schmuker, Samuel, (1879-1921) artist. Postcard featuring a color illustration of a Red Cross… https://www.rawpixel.com/image/8786625/image-art-medicine-heartFree Image from public domain license