multivalent vaccine; polyvalent vaccine
Medical term for a vaccine that targets multiple strains or serotypes of a pathogen.
多価ワクチンは、一度の接種で複数の型のウイルスを予防できる。
A multivalent vaccine can prevent multiple strains of a virus with a single shot.
Compound of 多価 (multivalent) and ワクチン (vaccine). 多価 is a technical term from chemistry/immunology meaning 'having multiple valences'.