Lois chooses not the vaccinate Stewie and decides to try to change the mind of others.

A child is sick in the hospital when the aunt confesses that her son was sick previously. Learning that the son hasn't had any vaccinations, Manning kicks them out of the hospital for putting others at risk.

A young mom brings her baby into the clinic to be seen by Dr. House. Noticing the baby hasn't had any vaccinations, House procedes to educate her on the dangers of not vaccinating her child.

Hank explains adaptive immune systems and how they function to fight against pathogens ny creating antibodies.

Since workers who are obese costs more to care for, employeers are having to come up with solutions to save them money.