▪️Lockdown 封鎖(ふうさ) fuusa
▪️Isolation 隔離(かくり) kakuri
▪️Quarantine

隔離(かくり) kakuri
▪️Hoarding 買い溜め(かいだめ) kaidame
▪️Infection 感染(かんせん) kansen
▪️positive 陽性(ようせい) yousei
▪️negative 陰性(いんせい) insei
Some useful terms for the current situation.