The basic one is where a big catfish in namazu-e is replaced with the god of measles, such as 'hashika nochino yojo' (care after measles) in comparison with 'sokuseki namazu hanashi' (quick talk on catfish) where people are beating a catfish in the drawing.
ナマズを打ち据える民衆を描いた「即席鯰はなし」に対する「はしか後の養生」など、鯰絵における大鯰を麻疹の神に置き換えたものが基本である。