Solutions · Vaccines
For vaccines outside the routine programme, whether a person gets vaccinated depends heavily on whether their municipality subsidises it, by how much, and for which age groups. Every municipality decides separately. There is no national list — not in English, and not in Japanese either.
The distinction is set by the Immunization Act and it governs everything downstream.
定期の予防接種
Defined in the Act. Split into two classes: for category A diseases there is a duty of effort on the recipient and public funding is the norm; for category B diseases there is no such duty.
Demand here is comparatively stable and nationally structured.
任意接種
Not defined in the Act — it is what remains once routine and temporary vaccination are accounted for. Which means there is no national rule about who pays.
Each municipality decides whether to subsidise, how much, for whom, and how many times. This is where the commercial variation lives.
A national vaccination coverage figure tells you the average of 1,747 different policies. It will not tell you that two neighbouring municipalities differ by tens of thousands of yen in what a resident pays out of pocket, which is the difference between a product moving and not moving.
Nor is it published centrally. Each municipality states its own conditions on its own website, in its own format, and changes them by fiscal year.
The institution, the municipality, and what is actually happening.
Every field was read off a municipal web page by a person.
The compiled dataset covers shingles, pneumococcal and influenza vaccination for a single fiscal year. It is not maintained on an update cycle. Collection dates differ by vaccine and by municipality — influenza was gathered during the season, for instance.
Coverage of other vaccines, other years, or a refreshed collection is scoped individually. We would rather say that plainly than imply a currency the data does not have: walking 1,747 municipal websites is weeks of work, so we agree the vaccines and the period with you before starting.
Only a minority publish their vaccination arrangements.
In a survey of one prefecture we analysed the websites of several thousand medical institutions. A fifth mentioned the vaccine at all; around one in eight could be confirmed as administering it. That is a real list, but a small one relative to the market.
The more useful result came from comparing those institutions against a random sample. The ones administering had recognisable characteristics — particular specialties displayed, particular notified capabilities including infection control and cancer care coordination, more nurses, a younger director, longer opening hours, more outpatients per day. Applying that profile nationally produced a graded set of institutions matching five, four or three of those attributes.
The institutions publishing that they vaccinate are limited in number. But their attributes can be learned, and the ones that have not published can then be found. The same method applies wherever the visible population is small and the attributes are recorded.
Tell us the vaccine and the question, and we will tell you which of these layers answers it — and what it will not tell you. Working with us from outside Japan? Read how engagements run first.
Engagements typically start from several million Japanese yen — indicatively, tens of thousands of US dollars. The US dollar figure is for scale only and is not a quoted price. Scope, coverage and contract term determine the final figure.