引用:
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作者oversky.
謝謝提供論文資料。
不過裏面那個樣本可以回推到去年 11月27日以前？
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那是去年4月底的論文,跟你說的案例怎麼會相關?
我只是要告訴你,"IgM 感染後 21 天消失"不是一定的,有些人就是晚啊
https://www.sciencedaily.com/releas...01224113124.htm
像是這篇還說到
As in other studies, the researchers found that people with asymptomatic and mild illness had lower levels of antibodies overall than did those with severe disease. After recovery, the levels of IgM and IgA decreased steadily to low or undetectable levels in most patients over a period of about one to four months after symptom onset or estimated infection date, and IgG levels dropped significantly.
https://www.fruitenzy.com/the-adaptive-immune-system/
IgM 是最早期出現的抗體，感染新冠病毒的前 2 星期，會偵測到比較高濃度的 IgM，但是 1~2個月後 IgM 的濃度會因清除病毒而迅速下降、消失
https://www.tma.tw/ltk/109631004.pdf
表一 IgM持續呈現陽性可做為恢復較慢的預測指標
這些都告訴你IgM不見得21天就一定消失,有些人就是會慢