日本を対象とした研究
The prevalence of COVID-19 vaccination and vaccine hesitancy in pregnant women: an internet-based cross-sectional study in Japan
(妊婦におけるCOVID-19ワクチン接種の普及率とワクチン忌避：日本におけるインターネットベースの横断的研究)
Advance online publication: January 29, 2022
Economic hardships and self-reported deterioration of physical and mental health under the COVID-19 pandemic: A cross-sectional study, 2020, Japan
（COVID-19感染拡大下における経済的困難と心身の健康状態の悪化：2020年インターネット横断調査）
Advance online publication: January 29, 2022
The Association of Work-related Stress According to the Demand–Control Model With Aggravation of Pre-existing Disease During the First State of COVID-19 Emergency in Japan
（第１回目の緊急事態宣言下の日本における仕事の要求度－コントロールモデルに基づく職場ストレスと持病の悪化との関連）
Published: December 05, 2021
Prevention Measures for COVID-19 and Changes in Kawasaki Disease Incidence
(COVID-19パンデミックに対する感染予防策と山梨県内における川崎病発生の減少)
Published: November 05, 2021
Serologic survey of IgG against SARS-CoV-2 among hospital visitors without a history of SARS-CoV-2 infection in Tokyo, 2020-2021
（2020年9月から2021年3月における都内病院の来院者を対象とした抗新型コロナウイルス抗体保有の大規模血清疫学調査）
Advance online publication: November 13, 2021
Emergency Dispatches for Suicide Attempts During the COVID-19 Outbreak in Okayama, Japan: A Descriptive Epidemiological Study
(岡山における新型コロナウィルスの流行と自損行為による救急出動の関連について：記述疫学研究)
Published: September 05, 2021
Clinical Characteristics and Risk Factors for Severe Outcomes of Novel Coronavirus Infection, January–March 2020, Japan
(日本における新型コロナウイルス感染症の臨床的特徴と重症化リスク因子 2020年1月～3月)
Published: August 05, 2021
Mobility Change and COVID-19 in Japan: Mobile Data Analysis of Locations of Infection
(日本におけるモビリティ変化とCOVID-19流行の関連：モバイルデバイスデータに基づく職場、夜の街、居住地におけるモビリティ変化の分析)
Published: June 05, 2021
Changes in smoking behavior since the declaration of the COVID-19 state of emergency in Japan : A cross sectional study from the Osaka health app
(緊急事態宣言期間における喫煙行動の変化 大阪府健康アプリデータの分析)
Published: June 05, 2021
[Commentary] Professional commitment to ethical discussions needed from epidemiologists in the COVID-19 pandemic
Published: September 05, 2020
Early SNS-Based Monitoring System for the COVID-19 Outbreak in Japan: A Population-Level Observational Study
Published: August 05, 2020
Excess mortality from suicide during the early COVID-19 pandemic period in Japan: a time-series modeling before the pandemic
（日本におけるCOVID-19感染症流行初期の自殺の超過死亡：時系列モデリングによる分析）
Published: February 05, 2021
Changes in psychological distress during the COVID-19 pandemic in Japan: a longitudinal study
Published: November 05, 2020