OttVillager
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五十美元，十五分钟就能检测一个人是否有新冠病毒抗体。美国可能依据结果决定是否一个人可以复工。大家聊聊这是怎么回事。
一个正常人先天具有新冠抗体还是感染恢复后才具有抗体？
一个正常人先天具有新冠抗体还是感染恢复后才具有抗体？
美国新冠病毒抗体测试是怎么回事？
- 主题发起人 OttVillager
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有抗体是已经被感染过了，才可能产生的。
但是现在还不能完全确定有抗体后是否有可能再次被感染，即抗原是否再次转阳性，现在已经有一些报道，发现有治愈转阴性的病人，再次测出阳性。
同样现在不能完全确定出现抗体后，是否一定不会传染他人。
lfe634
灰體輻射
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昨天有一個新聞，91 個已經得了新冠而康復的南韓人，再測竟然又是陽性。
www.thestar.com.my
據說有一種情況，病毒變異之後，原本抗體不僅失效，還會幫著病毒入侵細胞，加重病情。
en.wikipedia.org
新冠與流感同屬變異快的 RNA 基因病毒 (我們人類是 DNA 基因)。
所以即使有抗體也不能保證終身免疫，流感可以得很多次。同樣即使新冠未來有疫苗，也可能要定期追加。
似乎有抗體也不太能放心，摸著石頭過河吧。
91 S. Koreans retest positive for Covid-19 after recovery
SEOUL (Xinhua): A total of 91 South Koreans had retested positive for the Covid-19 after being released from quarantine with full recovery, the country's health authorities said Friday (April 10).
Antibody-dependent enhancement - Wikipedia
所以即使有抗體也不能保證終身免疫，流感可以得很多次。同樣即使新冠未來有疫苗，也可能要定期追加。
似乎有抗體也不太能放心，摸著石頭過河吧。
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7 hr 53 min ago
2% of known recovered patients in South Korea have retested positive for coronavirus
From CNN’s Jake Kwon in Seoul
A man receives a Covid-19 test swab at a testing booth outside the Yangji Hospital in Seoul, South Korea on March 17. Ed Jones/AFP/Getty Images
South Korea's Centers for Disease Control and Prevention (KCDC) reported Friday that 2.1% of recovered coronavirus patients have retested positive.
Out of 7,829 patients who recovered from Covid-19 and were released from isolation, 163 retested positive.
It is currently unclear why patients could be retesting positive and the phenomena is being reviewed by the government.
Most experts think it's unlikely that somebody will be reinfected right after recovering. It's possible that issues with testing – or varying amounts of viral RNA in the body, which the tests look for – could explain why people tested positive after testing negative.
KCDC reports that the positive tests came back between 24 hours and 35 days, but the average was around 13.5 days following release from isolation.
Out of 137 cases the KCDC observed, 43.9% showed mild symptoms.
Samples were taken from 28 of the cases that retested positive and so far six samples did not cultivate the virus.
Examination of the 22 other samples is ongoing.
2% of known recovered patients in South Korea have retested positive for coronavirus
From CNN’s Jake Kwon in Seoul
A man receives a Covid-19 test swab at a testing booth outside the Yangji Hospital in Seoul, South Korea on March 17. Ed Jones/AFP/Getty Images
South Korea's Centers for Disease Control and Prevention (KCDC) reported Friday that 2.1% of recovered coronavirus patients have retested positive.
Out of 7,829 patients who recovered from Covid-19 and were released from isolation, 163 retested positive.
It is currently unclear why patients could be retesting positive and the phenomena is being reviewed by the government.
Most experts think it's unlikely that somebody will be reinfected right after recovering. It's possible that issues with testing – or varying amounts of viral RNA in the body, which the tests look for – could explain why people tested positive after testing negative.
KCDC reports that the positive tests came back between 24 hours and 35 days, but the average was around 13.5 days following release from isolation.
Out of 137 cases the KCDC observed, 43.9% showed mild symptoms.
Samples were taken from 28 of the cases that retested positive and so far six samples did not cultivate the virus.
Examination of the 22 other samples is ongoing.
昨天有一個新聞，91 個已經得了新冠而康復的南韓人，再測竟然又是陽性。
據說有一種情況，病毒變異之後，原本抗體不僅失效，還會幫著病毒入侵細胞，加重病情。91 S. Koreans retest positive for Covid-19 after recovery
SEOUL (Xinhua): A total of 91 South Koreans had retested positive for the Covid-19 after being released from quarantine with full recovery, the country's health authorities said Friday (April 10).
新冠與流感同屬變異快的 RNA 基因病毒 (我們人類是 DNA 基因)。Antibody-dependent enhancement - Wikipedia
所以即使有抗體也不能保證終身免疫，流感可以得很多次。同樣即使新冠未來有疫苗，也可能要定期追加。
似乎有抗體也不太能放心，摸著石頭過河吧。
OttVillager
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等加拿大能容易测试新冠抗体时，也想测试下我家小孩。去年圣诞节前后得过发烧，肺炎。
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2% not too bad.7 hr 53 min ago
2% of known recovered patients in South Korea have retested positive for coronavirus
From CNN’s Jake Kwon in Seoul
A man receives a Covid-19 test swab at a testing booth outside the Yangji Hospital in Seoul, South Korea on March 17. Ed Jones/AFP/Getty Images
South Korea's Centers for Disease Control and Prevention (KCDC) reported Friday that 2.1% of recovered coronavirus patients have retested positive.
Out of 7,829 patients who recovered from Covid-19 and were released from isolation, 163 retested positive.
It is currently unclear why patients could be retesting positive and the phenomena is being reviewed by the government.
Most experts think it's unlikely that somebody will be reinfected right after recovering. It's possible that issues with testing – or varying amounts of viral RNA in the body, which the tests look for – could explain why people tested positive after testing negative.
KCDC reports that the positive tests came back between 24 hours and 35 days, but the average was around 13.5 days following release from isolation.
Out of 137 cases the KCDC observed, 43.9% showed mild symptoms.
Samples were taken from 28 of the cases that retested positive and so far six samples did not cultivate the virus.
Examination of the 22 other samples is ongoing.
也算是个安慰吧
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这个可不是一般的阳性率，是治愈，转阴后，有2%再次出现新冠病毒阳性患者。
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Still not too bad. Better than a high percentage...
