Answering reader questions: Incubation period, vaccines coming this fall, nasal sprays

September 10, 2023.Reading time 12 minutes.

I received a couple of reader questions in recent weeks that I’d like to answer here, in the hopes that my responses will be more broadly helpful. The questions cover COVID-19’s incubation period (i.e. time between exposure and symptoms), vaccine effectiveness for this fall, and nasal sprays.

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