NormanPerlmutter

I live in the US. I'm 37 years old and fairly healthy though not in perfect health with regard to covid risk (I'm a little overweight and have a blood clot in my personal history). I've never gotten covid as far as I know. I got my second dose of Pfizer on April 21, 2021. I am tentatively planning to get a booster shot soon, but I'm not certain whether I should or not. When should I get my booster, which vaccine should I get for my booster, and why? [Edit 11/19/21: and should I get a booster at all?] Considerations are as follows. A lot of the following comes from the comments and responses to this question about booster effectiveness and in particular the comments by Elizabeth. This other question about which booster shot to get is also relevant. Getting any booster would almost certainly increase my immune defense to covid substantial and have no long-term or major direct side effects. Pfizer and Moderna boosters are approximately functionally equivalent. A J&J booster might be slightly worse or slightly better. But getting a booster now might have indirect long-term side effects. In particular, Elizabeth suggested that there could be a limit to the number of mRNA shots that one can get in a lifetime, either against Covid or against all diseases in the aggregate, because the body could develop immune reaction to mRNA vaccines, or side effects could increase with the number of doses. If this is true, then it might make sense to wait on a booster, until a more effective booster comes out, for instance one specifically tailored to the delta variant. Or to wait until the timing of the booster is maximally efficient to improve immune function. Also, there may be legal or administrative restrictions on getting more than one booster, so again it may make sense to wait until a better booster is available. Even if I were willing to lie to get around these restrictions, such lies might prevent me from having an accurate vaccination card, which could cause problems dow