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by confeit 2290 days ago
> People regularly become ill with a cold due to a coronavirus and may catch the same one about 4 months later.

> This is because coronavirus antibodies do not last for a long time. Also, the antibodies for one strain of coronavirus may be ineffective against another one.

> The general trend of IgM peaking at ≈1 month after symptom onset and IgG peaking at 2–4 months was consistent among different studies.

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