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John, all my sources say the Pfizer vaccine has a 3 week recommended delay between first and second shots, not 4. See, e. g. https://apnews.com/article/how-fast-second-coronavirus-vaccine-shot-6ec3e81fe1c9c3a41afdd62decf59496

Did you mean the Moderna vaccine?

Also, you wrote "reprint" above. Did you mean "preprint"?

Sorry, but I *do* own nitpicking.com.

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Well, firstly, it's hilarious that you own that domain, nice get.

I've got this issue with my autocorrect on my computer where it likes to change "preprint" to "reprint." I had told it to stop, but I guess it started again! Fun.

You're right about the dosing schedule of the Pfizer vaccine. I got turned around on this by the fact that the studies in Israel are looking at a 4-week period. This is because they are real-world studies, and patients rarely do things exactly on schedule. This makes the letter to the editor in NEJM even less sensible as a communication (also the letter tries to obscure this fact by saying the doses are "within one month," to make it sound like they have more than a week of follow-up). It's a good point you make--in the clinical trial, genuinely, the dosing schedule was 3 weeks. I don't expect that to be adhered to in the real clinical setting, but in the clinical trial they do stick to the timing. Thanks for pointing that out, I'm going to make some edits.

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In a personal connection, I once used that domain to nitpick the Philcon hotel (http://blog.nitpicking.com/2019/11/we-cant-run-out.html).

I'm scheduled for vaccination March 26. The State of New York automatically makes a followup appointment for exactly 3 weeks after the date of your first shot (at the same time). (People in my category seemingly get only the Pfizer vaccine, at least as of right now.)

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