https://ourworldindata.org/covid-vaccinationshttps://ourworldindata.org/explorers/coronavirus-data-explorer?facet=none&Interval=6-month+rolling+total&Relative+to+Population=true&Color+by+test+positivity=false&country=USA~ITA~CAN~DEU~GBR~FRA~JPN&Metric=Vaccine+doses
http://www.nicovideo.jp/watch/sm42355840
