in today’s column Why does everybody in the world play tag?, Cecil mentions that “In some variants the children pretend that the touch carries some form of contagion.”
This sound like what we used to play growing up in western Colorado, simply called “Girl Germs”. If a boy accidentally touched a girl and other boys saw it, they would mock him, chanting “♫ AWB has girl germs ♫”. Said boy would then be it, chasing the others until he tagged them, then chant that the new “It” has the girl germs now.
Girls of course played the inverse of this, “Boy Germs”.
Funny, we didn’t play this much beyond 2nd grade.