- Seth MacFarlane (Peter Griffin / Brian Griffin / Stewie Griffin / Glenn Quagmire (voice))
- Alex Borstein (Lois Griffin / Tricia Takanawa / Loretta Brown / Barbara Pewterschmidt (voice))
- Mila Kunis (Meg Griffin (voice))
- Seth Green (Chris Griffin (voice))
- Patrick Warburton (Joe Swanson (voice))
- Arif Zahir (Cleveland Brown (voice))
Family Guy — S15E6
Episode: Hot Shots
Air Date: 2016-11-13
Runtime: 22 min
Overview
In order to "save" Stewie from autism, Peter and Lois decide not to vaccinate him and then proceed to convince the rest of Quahog to follow suit. Stewie runs away to save himself from diseases until Sean Penn swoops in to save the day and brings vaccines to the whole town.