Dictionary.com
definitions

Andromeda strain

noun
  1. an infectious pathogen that mutates unpredictably into new forms and shows extreme resistance to destruction by conventional means.

Origin of Andromeda strain

First recorded in 1970–75; after such a pathogen in a novel of the same name (1969) by U.S. author Michael Crichton (born 1942)
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018