50 Comments
Apr 6, 2022Liked by Katelyn Jetelina

Katelyn, You are doing an excellent job of informing everyone of factors to consider. I appreciate your effort.

This comment from a career MIcrobiologist(41 years)

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Apr 6, 2022Liked by Katelyn Jetelina

I want to know if they're going to study this guy: https://www.kcrg.com/2022/04/03/man-germany-gets-90-covid-19-shots-sell-forged-passes/

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Apr 6, 2022Liked by Katelyn Jetelina

It's easy to get into the weeds with all this. Thanks for making it clear without losing critical details.

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As your friendly neighborhood editor, I would suggest, especially in important posts like this, that you lead with your bottom line--in this case, "If you're eligible, go get your booster." And then follow with "Here's why:" and go into your full explanation. Especially in this day of TL:DR, to communicate successfully to many readers, you need to include the recommended action or key point in your lead (lede, for journo freaks).

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THANK YOU! I teach middle school science and I ( we) look forward to your blogs. I share them with my students and we discuss them together. You write in a way that everyone in the room understands- not easy. Thank you again and again for doing this- we all benefit!

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A wonderfully comprehensive piece that articulates the concerns and questions I've had since the CDC and FDA authorized a 2nd booster for over 50's (hubs and me). I wonder if there is any benefit to alternating mRNA vaccines for the 2nd booster (i.e., if I've received all 3 Moderna doses, should I now go with Pfizer for #4?)

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I re-read this, and re-appreciated all the work that went into it!

Paul Offit's NEJM opinion today is kind of a bummer. He has been kind of a bummer for a while though, and playing the booster contrarian has become more of an ideological position for him I think. I'll cut and paste the relevant statement he makes about OAS in reference to 4th shots... but he really cherry picks the non-human primate study, which I think is not as balanced or fair as your take here.

Would be nice to have all sorts of vaccine, booster #, infection, and variant-naive cohorts to compare in terms of antibody and immune responses, and then mash them up with future variant exposure... but I like how you bring us back to the main point - which is we are making decisions in real time, and with the available evidence. Offit has positioned himself well for a future I-told-you-so, but how many booster-preventable deaths would have occurred if FDA went with his anti-booster hunch pre-Omicron? Not insignificant. Walensky bailed us out.

Anyway, as a clinician, just want to say I appreciate how hard this post was to organize and present. It helped me avoid some Offit-induced gloom.

Here's Offit from NEJM today:

"And all age groups are at risk for the theoretical problem of an “original antigenic sin” — a decreased ability to respond to a new immunogen because the immune system has locked onto the original immunogen. An example of this phenomenon can be found in a study of nonhuman primates showing that boosting with an omicron-specific variant did not result in higher titers of omicron-specific neutralizing antibodies than did boosting with the ancestral strain. This potential problem could limit our ability to respond to a new variant."

(no other studies mentioned)

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I really appreciate the time and mental brain power you took to write this important information up. Yes, most will go over my head, and I really appreciate the "Bottom Line" summation. We have a state COVID vaccination program where a bus comes to our rural mountain community for a one day vaccination opportunity. You bet I will be there to get my booster! I've been fortunate to not have any horrible side effects (knock on wood.) Was a bit concerned because the first shot was the J&J and then I boosted with Moderna. Going to stick with the Moderna for the second booster too. Thanks so much again!

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I am 74 and have had 2 Pfizer injections and a Pfizer booster. I am going to get a Moderna second booster. Thank you for your advice. I am A master’s level RN. I expect to have more side effects but I think I might get a stronger immune response.

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Amazing re cap! Man that is a tough topic to summarize & explain and you did it exquisitely!! Thank you

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Apr 6, 2022·edited Apr 6, 2022

Thank you for this timely piece as I am weighing up the need for a 4th booster. I am in my mid 50's, had my booster last October as I have an underlying condition and work in a childcare/school setting. I got Covid in January - took 4 weeks to recover. So is now the time to get my 4th booster? Seems from what you've written the answer is "yes"?

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founding

Would you please fix the typo in this sentence: “For example, the antibody levels weren’t correlating with severe disease when we would except [expect] they would.”

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Got my second booster and now have two Moderna vax, one Pfizer boost and second Moderna boost. Not worried overly about OAS. Wish my health plan would allow me to also get J&J vax since a broad spectrum approach might do more good than harm. Real long term solution is the pan-coronavirus vaccine in development.

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You mention the potential for a pan-coronavirus vaccine. Might OAS interfere with its operation in someone who's already been exposed to SARS-CoV-2 (or another vaccine)? Would it be more effective to give multiple separate vaccines (at different times) for different antigens so the immune system won't see them as redundant?

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Beyond OAS, I have a question: The cases per 100,000 in my county, as of 4/7/22 were 98.89. One week ago the number was 80.35. Your first interpretation of the numbers chart, suggested that 50 to 99 cases per 100,000 is "orange". This weeks number is a hair breadth away from the "red" zone. Yet, the CDC considers my county 'green', or in the previous classification, "blue". Which guideline presents less risk to the individual? The previous one, or the current one?

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