| Comment | Hasn't this been one of the fears that scientists have had since it appeared? There was a Spanish paper a few months ago talking about how immunity did not appear to last longer than 3 months in many patients but would need further investigation since the B cells could still be around. Other Coronaviruses typically have a short lived immunity and [one paper suggested](https://pubmed.ncbi.nlm.nih.gov/2170159/) that it may only last a year.
Regardless, it probably doesn't matter. Spain's health system was completely overwhelmed and only 5% of the population got infected making any prospect of herd immunity infeasible. All bets will be on a vaccine and personal responsibility, I think. |
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