检疫 jiǎnyì quarantine

免疫 miǎnyì immunisation; immunise; immunity; immunized; immunoassay; immunological; immunologically; immunology

免疫力 miǎnyì lì immunity

鼠疫 shǔyì plague

瘟疫 wēnyì pestilence; pestilential; plagues

疫苗 yìmiáo vaccine; vaccines

疫情 yìqíng epidemic

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