When sick,human body's temperature can reach high numbers.High temperatures can damage the brain.
It appears that creator was never ever vaccinated and his brain is damaged due to high temperatures because he got sick one day and that could be prevented with a vaccine,resulting in creation of this horrible anti-vax propaganda that will kill many children.Never play this.NEVER.
EDIT: funny vax rot shitpost, hope this game didn't lead to deaths, sry for cursing