新冠疫情期間確診者「解除隔離」(released from hospital isolation)，「出院後又復陽」(tested positive again after being discharged) 的案例頻傳，國內也出現首例三次採檢陰性出院後，又因胸口不適採檢復陽個案。後來中央流行疫情指揮中心表示，因應國際間「復陽」(retesting positive) 狀況頻傳，檢疫標準進一步增加為「三次採檢均為陰性」(three consecutive negative tests)，才能解除隔離。
以下為國外媒體報導：
People are retesting positive for COVID-19 again; doctors suggest three consecutive negative results before discharging . . . . Taiwan has implemented stricter requirements when releasing patients, now requiring three consecutive negative tests instead of just two. (The Online Citizen , March 9, 2020)
Photo: Reuters l 圖片:路透社
疫情中心表示COVID-19發病後第一週病毒量較高，較易採檢到陽性；若發病時間較長，可能「時陰時陽」，會謹慎多採幾次。
「時陰時陽」英文怎麼說？可以說tested positive and negative on and off。如：
I am currently infected with Covid-19 in Brisbane, Australia. . . . for 17 days and testing positive and negative on and off. (Covidessay.blogspot.com, March 21, 2020)
Photo/GRAPHIC courtesy of Bookman l 圖片:書林
國家教育研究院「雙語詞彙審譯會」則是把「時陰時陽」譯為inconsistent test results。
除了時陰時陽以外，因為此病毒的檢測時有不明確的狀況，搭配患者幾無症狀的表現，又出現了「介於陰陽之間」的說法：
我國438例確診者，目前除了一名個案三採陰出院後轉陽，還有三名個案出院後，再回院採檢結果介於陰陽之間，「類似當時軍艦有官兵採驗陰性後，又出現陽性結果，介於陰陽之間不容易判讀。」
（2020年5月6日，《聯合報》）
「（採檢結果）介於陰陽之間」的英文又該怎麼說？可以說tests with ambiguous results，不過更簡潔的譯法是：inconclusive test result。
美國退伍軍人部(Department of Veterans Affairs)網站上對inconclusive test result有清楚的解釋：
An “inconclusive” result might mean “insufficient” or “indeterminate.” “Insufficient” simply means that there was a problem with the sample you provided that prevented it from being tested at all. “Indeterminate” means that the test didn’t provide a clear negative or positive result.
不管是什麼疾病，採檢陰陽狀況不確定時，都可以用這個說法。
防疫必備詞彙：採檢結果
採檢 specimen collection and testing
居家隔離 (government enforced) home quarantine
解除隔離 released from hospital isolation
（狀況）時陰時陽 inconsistent test results
（採檢）介於陰陽之間 inconclusive test result
三次採檢陰性（三採陰） three consecutive negative tests
文章由書林出版公司提供：
www.bookman.com.tw
蘇正隆 — 台灣翻譯學學會前理事長、師大翻譯研究所兼任副教授; 編著《英語的對與錯》，《世紀病毒：必讀防疫英文知識與詞彙》...等
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