NPCs composing that spawngroup :

A_Diseased_Underbulk (100%)

NPCs spawning around that spawngroup :
(Max range : 100)

podisease2050410, range=41 (-776,2031,146)

A_Diseased_Underbulk (50%)
A_Diseased_Underbulk (50%)

podisease_288389, range=0 (-747,2002,148)