miniature scarlet fever

min·i·a·ture scar·let fe·ver

obsolete term for a reaction consisting of fever, nausea, vomiting, and a transient scarlatiniform rash that appears in a susceptible person injected with the toxin of Streptococcus pyogenes with the intention of vaccination. [L. minio, pp. atus, to color with minium, red-lead]