Cause of food poisoning, for short

ECOLI

This bacteria is often linked to undercooked ground beef or contaminated leafy greens and belongs to a group named after its discoverer, Theodor Escherich.

This clue asks for a shortened name of a bacteria often linked to food poisoning. "E. coli" (short for Escherichia coli) is a well-known culprit behind outbreaks from contaminated food, and "for short" hints at using just "ECOLI" without the punctuation. The answer fits because it’s both a common cause of illness and a term frequently abbreviated in headlines.