ZT:新冠核酸检测研讨文章

https://mp.weixin.qq.com/s/uc54iVcoBX__CfRBU78dTg

https://mp.weixin.qq.com/s/bfRkIBWv_-vtTXhssVF2BQ

https://medicine.yale.edu/labmed/sections/virology/COVID-19%20Ct%20values_YNHH%20Aug.%202020%20_395430_36854_v1.pdf

Points raised in NY Times article•Standard tests diagnose large numbers of people carrying insignificant amounts of virus.

•Most are not likely to be contagious. If Ct >33, virus not grown in culture.

•A cycle threshold >35 is too sensitive.

•A more reasonable cutoff is Ct 30-35 or even Ct <30.

•In NY state lab, 50% of recent positives had Ct >35.

•In MA, 85- 90% of positives in July had Ct >30.

•Cycle threshold is never included in the results sent to clinicians.

•For outbreak tracing, cheap and abundant rapid tests are needed, even if less sensitive

https://www.aacc.org/cln/cln-stat/2020/december/3/sars-cov-2-cycle-threshold-a-metric-that-matters-or-not

 

 

 

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• 看着累 -fuz- ♂ (0 bytes) () 01/23/2021 postreply 08:26:18