Follow
"If you’ve presented the same arm for every dose of a particular vaccine, you may want to reconsider. Alternating arms may produce a more powerful immune response, a new study suggests."
https://www.nytimes.com/2024/02/06/health/vaccines-arms-immunity.html
@gpollara I think the important point here is that while this effect size is unlikely to make a difference for the average healthy adult, it could be a tipping point for the very young, very old, immunodeficient etc. And it's a zero cost measure.
@cyrilpedia this has been discussed so much. New data does indeed suggest a change of possibly good, if vaccines very close together