Once inside a host, often a virus will have a specific “tissue tropism,” meaning it has a fondness for infecting and replicating inside a certain part of our body. Some viruses can infect many types of cells. Other viruses live primarily inside a certain organ.14 The rabies virus travels along our neurons. Hepatitis hides in our livers. SARS-CoV-2 likes to live in the lining of our respiratory tract.
