Thanks Nucleus Medical Media for providing these amazing 3D animations. If you want to watch more scientifically accurate medical visuals, check out their channel:

This is SARS CoV-2. It belongs to the family of corona viruses, some of which cause disease in people and animals, named for crownlike spikes on their surfaces.
SARS CoV-2 can cause COVID-19, which stands for corona virus disease 2019, a contagious viral infection that attacks primarily your throat and lungs.
What actually happens in your body when you contract the corona virus? What exactly causes your body to develop pneumonia? And how would a vaccine work?