Delayed rashes are known to show up occasionally after other vaccines too, she adds, and they can be a sign of hypersensitivity or a normal part of the immune response
10.1016/j.jfda.2018.12.002 79 HeX.YoshiokaY
This is another aspect of the catch-22 backlash: without appropriate levels of B12, the effects of FIP may worsen, and because of FIP, your cat's ability to retain adequate reserves of B12 is diminished
BPC-157 in injury recovery and joint repair: mechanisms and emerging data
Pernicious anaemia , the autoimmune condition causing B12 malabsorption, may coexist with other autoimmune disorders, including autoimmune thyroid disease and, less commonly, rheumatoid arthritis