遅発 ちはつ せいウイルスじゃなかったです
chihatsu sei uirusujanakattadesu

Noun
Desu Copula

The polite, past negative form of 遅発性ウイルス

1. Wasn't a delayed-onset virus.; Wasn't a late-appearing virus.

Past/Perfective
Negative
Polite
Casual Register