What has to happen in order for you to get sick with a virus?

To get sick with a virus, you typically need to be exposed to the virus itself, which can occur through direct contact with an infected person, contaminated surfaces, or respiratory droplets. The virus must then enter your body, often through the respiratory tract, mucous membranes, or breaks in the skin. A weakened immune system or underlying health conditions can increase susceptibility to infection. Once inside, the virus can replicate, leading to illness as your body responds to the infection.