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July 22, 2021
Uncategorized

香港男子新冠康復後再度確診 全球首宗

香港一名33歲、曾感染新冠肺炎並康復的男子,4個半月後赴歐洲旅遊完再次確診,成為全球首宗在康復後再度確診的案例。

香港大學李嘉誠醫學院微生物學系研究團隊表示,該名男子今年三月底確診新冠病毒後,於四月份康復出院,而他在事隔四個月後到西班牙旅遊,返回香港後再度確診。

研究人員稱,案例顯示新冠肺炎無終身免疫,患者可能會在康復後再度感染。研究團隊發現,患者在首次感染時曾經出現呼吸道症狀,但第二次感染時卻並無病徵,要從海外返港在機場做病毒檢測時才發現受到感染。研究人員比較了兩次感染後病毒的基因組序列,發現第二次感染似乎與最初感染的病毒株略有不同。科學家們說,這證實了該病例是真正的再感染,而不是由於初次感染的持續時間是陽性結果。

由於自然感染後所具有的免疫力可能只維持一段短時間,因此已受過感染的康復者也應考慮接種疫苗。先前曾感染過新冠病毒的患者還應遵守流行病學控制措施,例如佩戴口罩和保持社交距離。

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