The state of the infection of the new coronavirus (COVID-19) in Japan was summarized visually from a press release from the Ministry of Health, Labor and Welfare (MHLW).

JAPANESE

• Due to a change in the person in charge of the site, this repository will no longer be updated after January 31.
• The website itself will continue to be updated as before, and we are considering how to continue updating the data files.
• If you have any inquiries or requests, please fill out our inquiry form [Japanese].

• Toyo Keizai Online "Coronavirus Disease (COVID-19) Situation Report in Japan"
• https://toyokeizai.net/sp/visual/tko/covid19/en.html

• Press releases by the MHLW
• https://www.mhlw.go.jp/stf/seisakunitsuite/bunya/0000121431_00086.html
• The part of prefectural data, such as the number of Tested Positive in Tokyo, is retrieved from reports by each prefecture.

• The data used is also available as a CSV file.

  pcr_positive_daily.csv

  • The copy of the same file from MHLW open data.
  • Since the open data is saved as an overwrite, to keep the past data.
  • For more details, refer to: https://www.mhlw.go.jp/stf/covid-19/open-data.html

  pcr_tested_daily.csv

  • The copy of the same file from MHLW open data.

  cases_total.csv

  • The copy of the same file from MHLW open data.

  recovery_total.csv

  • The copy of the same file from MHLW open data.

  death_total.csv

  • The copy of the same file from MHLW open data.

  pcr_case_daily.csv

  • The copy of the same file from MHLW open data.

  serious.csv

  • This file contains the daily number of serious (critically ill) cases.
  • Since MHLW open data does not have the file of serious cases, we update this file from MHLW press releases.

  effective_reproduction_number.csv

  • This file contains the daily Effective Reproduction Number.
  • Formula: (New cases in past 7 days / New cases in 7 days before that) ^ (mean generation time / length of reporting interval).
  • Mean generation time is supposed to be 5 days, and length of reporting interval is supposed to be 7 days.
  • For the purpose of understanding current trends in real time, this formula is simplified and based on reporting dates.
  • Note that this formula is a simplified version and may be affected by reporting delays.
  • Model and supervised by Professor Hiroshi Nishiura of Hokkaido University Graduate School of Medicine.
  • Refer to GitHub repository published by Prof. Nishiura for further details.
  • https://github.com/contactmodel/COVID19-Japan-Reff

  demography.csv

  • Data source example [Japanese]: https://www.mhlw.go.jp/content/10906000/000696696.pdf
  • Number of tested positive, hospitalized, critically ill, and deaths, by age group.
  • "Unknown", "Undisclosed", and "Checking" are all summarized as "Unknown".

  prefectures.csv

  • File: https://github.com/kaz-ogiwara/covid19/blob/master/data/prefectures.csv
  • Data source example [Japanese]: https://www.mhlw.go.jp/content/10906000/000619075.pdf
  • Items such as the number of tested positive or people PCR tested, by publication date and prefecture.
  • Here are the items:
    • testedPositive: Tested Positive
    • peopleTested: People Tested
    • hospitalized: Hospitalized
    • serious: Critically Ill
    • discharged: Discharged
    • deaths: Deaths
    • effectiveReproductionNumber: Effective Reproduction Number

• It will be updated on an irregular basis according to the announcement by the Ministry of Health, Labor and Welfare.

• MIT license. Feel free to use it for research, news, and other commercial and non-commercial purposes.
• The developer assumes no responsibility arising from this project.
• Copyright notice should be like:
  • 東洋経済オンライン「新型コロナウイルス 国内感染の状況」制作：荻原和樹
  • Toyo Keizai Online "Coronavirus Disease (COVID-19) Situation Report in Japan" by Kazuki OGIWARA