Kids can get sick by playing too much on the pirate or space ship or by having a sick child use the "Spread Sickness" interaction on them. Treatments and Prevention
Having the "Germ Contractor" lot trait increases the chance of infection. Sickness Gamepack by SpaceAce at Mod The Sims 4
The mod adds a themed Adventurer Career with levels and branches: Rope Swinger Level 2: Trap Observer Level 3: Jungle Explorer Level 4: Relic Hunter Kids can get sick by playing too much
Completing the "Sickness Researcher" aspiration (under the Knowledge category) grants the "Sickness Immunity" trait. New Career: Adventurer Sickness Gamepack by SpaceAce at Mod The Sims 4