INCUBATE

(DISEASE) [verb] - (of harmful bacteria or viruses) to grow and reproduce, but not yet produce the effects of disease in a human or an animal, or (of the body of a person or animal) to have (bacteria or viruses) growing and reproducing inside, but not yet show the effects of diseaseWhile incubating, this type of virus is very resistant to pharmaceutical treatment. [I]It only takes one dog incubating an infectious disease to start off an epidemic. [T]