香港发现一例康复者二次感染COVID-19的病例，为全球首例

一名新冠病毒康复者自欧洲返回香港后，新冠病毒检测结果再次呈阳性。香港大学微生物学系团队证实，该患者是第二次感染新冠病毒，属全球首例。

这名二次感染新冠病毒的患者为一名33岁男子，他于今年3月底确诊感染新冠病毒，4月中旬康复出院，8月初经英国到西班牙旅行，返回香港后接受检测再度确诊。这名患者第一次感染时只有轻微症状，而这次没有任何症状。香港大学证实，该患者两次感染的病毒株基因排序明显不同，此次测序出的病毒与7月、8月在欧洲传播的病毒匹配度很高。这表明可以确定是二次感染，而不是第一次感染的病毒残留。

以往就有证据显示，新冠肺炎患者体内的抗体水平会在感染数个月后逐步下降。在美国和其他地方，医生已经报告了几例疑似二次感染病例，但这些病例均未经过严格的测试证实。

Researchers in Hong Kong are reporting the first confirmed case of reinfection with the coronavirus.

“An apparently young and healthy patient had a second case of Covid-19 infection which was diagnosed 4.5 months after the first episode,” University of Hong Kong researchers said Monday in a statement.

The report is of concern because it suggests that immunity to the coronavirus may last only a few months in some people. And it has implications for vaccines being developed for the virus.

The 33-year-old man had only mild symptoms the first time, and no symptoms this time around. The reinfection was discovered when he returned from a trip to Spain, the researchers said, and the virus they sequenced closely matched the strain circulating in Europe in July and August.

“Our results prove that his second infection is caused by a new virus that he acquired recently rather than prolonged viral shedding,” said Dr. Kelvin Kai-Wang To, a clinical microbiologist at the University of Hong Kong.

Doctors have reported several cases of presumed reinfection in the United States and elsewhere, but none of those cases have been confirmed with rigorous testing. Recovered people are known to shed viral fragments for weeks, which can cause tests to show a positive result in the absence of live virus.  source

指尖新闻：高信噪比，一目了然

新冠疫情追踪

全球首例？是我记忆错乱了吗……我怎么记得之前已经看过关于COVID 可以重复感染的报道

连感染过的人都会二次感染，那么疫苗能有多大用？感觉疫情要没完没了了。

qiuyingyue0516 发表于 2020-8-25 09:18
全球首例？是我记忆错乱了吗……我怎么记得之前已经看过关于COVID 可以重复感染的报道

可能这一次算是第一次严格测试证实了的。

This is chi*k must have drunk a different type of bat soup.  --白皮

emmm  二次感染不是在武汉爆发后就已经常识了，川普前阵子还跟二次感染康复后的女士对话来着

zz777 发表于 2020-08-25 17:40:41
emmm  二次感染不是在武汉爆发后就已经常识了，川普前阵子还跟二次感染康复后的女士对话来着

明明韩国就已经有过康复后再次感染的例子