Gintama - S2: Episode 41
The More Delicious the Food, the Nastier It Is When It Goes Bad
Gintoki, Shinpachi Kagura and Hasegawa are hospitalised (The Yorozuya gang for food poisoning from eating unfresh crabs; Hasegawa got knocked down by a car). They get themeslves involved when a young nurse falls in love with one of her patients.