Answer: superbug

AnswerCrossword Clue
SUPERBUGDrug-resistant bacterium
superbuga bacterium resistant to antibiotics
superbugA strain of bacteria that has become resistant to antibiotic drugs
superbugA bacterium that is useful in biotechnology, typically one that has been genetically engineered to enhance its usefulness for a particular purpose
superbugAn insect that is difficult to control or eradicate, esp. because it has become immune to insecticides