異い常じょう発はっ生せい

noun, noun which may take the genitive case particle 'no'

outbreak; plague; infestation

Refers to an abnormal, large-scale occurrence of harmful organisms such as insects, pests, or disease. Often used in news or technical contexts.

• 今年ことしはカメムシが異い常じょう発はっ生せいしている。

  There is an outbreak of stink bugs this year.

• 異い常じょう発はっ生せいした害がい虫ちゅうの駆く除じょが急いそがれる。

  Urgent extermination of the abnormally occurring pests is needed.