infestation
noun /ˌɪnfeˈsteɪʃn/
/ˌɪnfeˈsteɪʃn/
[countable, uncountable]- a large number of insects, rats, etc. living in a place where they are not wanted, often causing damage or disease
- an infestation of lice
- Scientists are checking for both insect and fungal infestation.