noun
DPT vaccine; combined diphtheria, pertussis, and tetanus shot
Medical abbreviation for 三種混合 (さんしゅこんごう), the triple vaccine. Used in clinical and parenting contexts.
See also: 三種混合
三混の予防接種は生後3か月から受けられます。
The DPT vaccination can be given from 3 months of age.