Font Awesome - Font Awesome makes it easy to add vector icons and social logos to your website. And version 5 is redesigned and built from the ground up!
Coronavirus awareness icons - 200 free icons for coronavirus awareness
Call the Doctor Illustration Constructor - Healthcare related vector illustrations for digital projects
Faticons COVID pack - Free, widely usable and customizable low-poly 3D icons
Feather Icons - Simply beautiful open source icons
3dicons - 3dicons library offers beautifully designed open-source 3D icons.