@BallouxFrancois @wanderer_jasnah Also separate question, but how do these studies account for survivorship bias? Someone with a previous infection survived covid, perhaps indicates ability to survive again via mechanisms other than through acquired immunity.
@BallouxFrancois@Wander\u jasnah也提出了一个单独的问题，但这些研究如何解释生存偏差？以前感染过新冠病毒的人存活下来，这可能表明他们有能力通过获得性免疫以外的机制再次存活。