COVID-19 clusters by March 31, 2020, Japan

TANAKA Sigeto <http://tsigeto.info>
(Graduate School of Arts and Letters, Tohoku University)

• Title: COVID-19 clusters by March 31, 2020, Japan || 2020年3月31日までに日本で発見されたクラスター
• Author: TANAKA Sigeto || 田中 重人
• Version: 2
• Date: 2025-03-12
• Language: ENG
• OSF: https://osf.io/52nvs

URI: http://tsigeto.info/cluster25

OSF project: https://osf.io/52nvs

Files

Details for the 25 COVID-19 clusters detected during January-March 2020 in Japan:

• Detailed documentation
• Perl script to extract data
• Dataset

The same data are deposited on the Open Science Framework site: {doi:10.17605/OSF.IO/52NVS}.

Communication

Questions/comments are welcome.

• E-mail
• SNS

Related sites and pages

• The Japan Model for COVID-19 Response
• [* The reported number of COVID-19 cases and its interpretion as official statistics: The changing connotation of "cluster"] (Kansai Sociological Association, 73th Conf. (online) 2022-05-29)
• [* Revisiting facts from a few years ago: fictiousness of Japan's “cluster-based approach” toward COVID-19] (Japanese Studies Workshop, 6th Conf. (Sendai), 2025-03-16)
• Was Japan's cluster-based approach toward coronavirus disease (COVID-19) a fantasy?: Re-examining the clusters' data of January-March 2020 (Annual Reports of Graduate School of Arts and Letters, Tohoku University, 75:96-83, 2026)

Tohoku Univ / School of Arts and Letters / Innovative Japanese Studies / TANAKA Sigeto

History of this page:

• 2026-03-21:Created

Generated 2026-03-21 17:12 +0900 with Plain2.

Copyright (c) 2026 TANAKA Sigeto