Term: superbug: a strain of bacteria that is resistant to all antibiotics
Broader: bacteria: (microbiology) single-celled or noncellular spherical or spiral or rod-shaped organisms lacking chlorophyll that reproduce by fission; important as pathogens and for biochemical properties; taxonomy is difficult; often considered to be plants | Unrelated: wood thrush: large thrush common in eastern American woodlands; noted for its melodious song