해충이나 쥐와 같은 유해 동물이 떼를 지어 나타나 피해나 질병을 일으키는 상태.
The presence of a large number of pests, such as insects or rodents, in a place in a way that causes damage, disease, or discomfort.
예문:
"The city council launched a campaign to combat the growing rat infestation in the subway system."
"A sudden infestation of aphids destroyed most of the roses in the garden."
"The school was fumigated over the weekend to eliminate a bedbug infestation."