In vanilla, Sims never get sick unless you buy Get to Work . This mod introduces a full medical system. Sims can develop chronic conditions (asthma, diabetes, allergies), require vaccinations, go to therapy, and even deal with health insurance.
“Vanilla Sims 4 got you bored? Add these 3 mods. One: Slice of Life – now your Sim gets acne before a first date. Realistic. Two: Road to Fame – become a celebrity stalked by paparazzi at the gym. Three: Live in Business – turn your garage into a nightclub. Yes, you can. Your Sims will never be boring again. Full mod list in bio.” sims 4 vagina mod hot
Because you are dealing with complex scripts, you must follow best practices: In vanilla, Sims never get sick unless you buy Get to Work