Ah, no, it is inspired by a roleplay I ran here on Heresy, which you can still find (it was called the Sick Children). It is not Nurgle, but Slaanesh!
Pre-heresy Emperor's Children, as you will see in Chapter One, which is almost done...
Give a man a match, and he's warm for a day.
Set a man on fire, and he's warm for the rest of his life!