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Other could point to a formal paper, but you can read this in the meanwhile,

https://www.businessinsider.com/coronavirus-recovery-damage-...

20-30% drop in lung capacity that "might improve over time" is hardly comparable to HIV or Ebola.

It takes years to recover, IF you recover that lost capacity (that's why it's "might improve").

Also, there's reported cases of people relapsing after being "recovered". Some of them even died, increasing suspicion that this virus might be biphasic:

https://www.reuters.com/article/us-china-health-reinfection-...

We simply don't know a lot about this virus yet.

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