鼠疫 is read as そえき (soeki) and means plague.
そえき
soeki
ねず
mouse
めんえき
being hardened (to)
けんえき
quarantine
ぼうえき
communicable disease control (e.g. by quarantine, disinfection, etc.)
じえき
epidemic
じゅどうめんえき
passive immunity
のうどうめんえき
active immunity
けいこうめんえき
oral immunization
しぜんめんえき
natural immunity
しゅうだんめんえき
herd immunity
えきびょう
けんえきじょ
quarantine station