When Sarah Gilbert heard about a mysterious new respiratory infection spreading in China in early January, she immediately wondered whether this was the long-dreaded Disease X — a previously unknown pathogen that would cause a catastrophic pandemic.
今年一月早些時候，薩拉?吉爾伯特(Sarah Gilbert)聽說一種神秘的新型呼吸道疾病在中國蔓延時，她立即想知道這是不是人們長期以來所恐懼的X疾病(Disease X)——以前不為人知、將導致災難性大流行病的病原體。
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