Short Answer: If optimizing for efficacy, the booster shot will likely be worth it for Pfizer, whereas other vaccines don't have clear evidence of declining efficacy yet. If optimizing for safety, one should be skeptical of the booster since a 3-dose regiment hasn't been tested in clinical trials. Watch the video or listen to the podcast with the links below. You can obtain a full transcript of the episode by signing up for the Masterpass at https://chrismasterjohnphd.com/q&a Please consider supporting my work by making a purchase using these links at one of my affiliates: https://chrismasterjohnphd.com/foursigmatic, https://chrismasterjohnphd.com/paleovalley, https://chrismasterjohnphd.com/seekinghealth, https://chrismasterjohnphd.com/ancestralsupplements, https://chrismasterjohnphd.com/magicspoon, https://chrismasterjohnphd.com/lmnt

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Chris Masterjohn, PhD, is the Founder and Scientific Director of the mitochondria test Mitome.