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[DOI] [PMC free article] [PubMed] [Google Scholar] 275.Maggiore, A
Rare : allergic reactions (particularly to methionine or preservatives), injection site inflammation

doi:10.1016/s0004-9514(06)70026-5 Teixeira LJ, Valbuza JS, Prado GF

The four stages of B12 deficiency are Stage 1, Stage 2, Stage 3, and Stage 4

1 2 3 4 5 6 7 "Comirnaty- covid-19 vaccine, mrna injection, suspension"
