system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why aren't doctors getting sick with so many patients?

Reddit, I was wondering if you knew why doctors weren't getting sick when they work with so many different patients and are in contact of so many different illnesses every day. Thanks!
gpt
It's because many patients they treat don't have infectious or transferable diseases. Sure, they may see many people with colds and flu, but your average GP is seeing just as many allergies, pregnancy checks, general vaccinations, awkward rashes, and sprained joints as they are cold and flu patients. Similarly, in hospitals, most doctors are treating transplant patients, broken bones, heart attacks, cancer patients, and the likes. 

While there are many illnesses a person can suffer from, very few can actually be spread by general face to face contact. Lets not forget as well that hospitals are generally some of the cleanest and most sterile places around, with doctors using more hand wash, antibacterial scrub, and cleaning products in half hour than many people do in a day.So even if a patient comes in with a nasty cold, and coughs all over the place, chances are it gets cleaned up long before the germs can spread.