[Vaccination]What should I do if I have lost my vaccination voucher?

Please contact your municipality of residence. There are municipalities that accept online applications through the Ministry of Health, Labour and Welfare’s [Covid-19 Vaccine Navi] website. Check the homepage for more details.
Covid-19 Vaccine Navi homepage:
(English) https://v-sys.mhlw.go.jp/en/
(Japanese) https://v-sys.mhlw.go.jp/