Translation guide
A vaccine containing a weakened form of the pathogen that can still replicate, as opposed to an inactivated vaccine.
The standard medical term for a vaccine that uses a weakened live pathogen.
The most common and direct translation. Used in medical contexts and everyday conversation.
This live vaccine needs to be refrigerated.
More precise term meaning 'attenuated live vaccine'. Often used in technical or medical literature.
A more literal translation, 'living vaccine'. Less common and may sound slightly informal or explanatory.
Live vaccines (生ワクチン) contain weakened pathogens that replicate, while inactivated vaccines (不活化ワクチン) contain killed pathogens. In Japanese medical contexts, this distinction is important for vaccination schedules and contraindications.
Attenuated live vaccines are made by weakening the virulence of the pathogen.
Since it uses a live vaccine, please be aware of side effects.
The interval between doses differs for live and inactivated vaccines.