Why might it be worse to get an infection from someone in the hospital than from someone on a bus?

is it because how bad the infection is, usually people that are in the hospital are in bad condition

Yes, stay away from hospitals. You can die there. Another point, drug resistance strains of bacteria tend to show up in hospitals more often than in a bus.

The lowered immune system of sick patients tends to allow more resistant strains of bacteria to colonize- some germs such as MRSA are present on our bodies but our immune sytems allow us to fight them by keeping the numbers down. Simple PROPER handwashing helps prevent gernms from multiplying too rapidly. Handwashing after touching a patient can go a long way to help prevent infections from spreading. Also pay attention if someone is on isolation precautions - follow the rules about wearing a mask or gown or gloves when you visit your loved ones in the hospital so that you don't get what they have and spread those germs to others when you leave.

Yes, that is one possible reason. In a hospital, there tends to be a higher concentration of individuals who are already sick or have weakened immune systems due to pre-existing conditions. This means that if you were to contract an infection from someone in the hospital, it could potentially be more severe and have more serious consequences.

Another reason is that hospitals are places where many different types of infections can be present, as they often house patients with various illnesses. Hospital staff and visitors also bring in germs from the outside. Conversely, on a bus or in public spaces, you are dealing with a more diverse population, which may have a lower concentration of individuals with severe illnesses or weakened immune systems.

Furthermore, hospitals are settings where invasive medical procedures are performed, increasing the risk of exposure to microorganisms. These procedures can introduce bacteria, viruses, and other pathogens into the environment, making it easier for infections to spread. Buses, on the other hand, do not typically involve invasive procedures that can contribute to the spread of infections to the extent that hospitals might.

It is important to note that this is a generalization, and the severity of infections can vary greatly depending on specific circumstances. However, the combination of a higher concentration of susceptible individuals, a greater variety of infections, and the potential for invasive procedures make getting an infection in a hospital potentially more dangerous than on a bus.