Skip to main page content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.

Https

The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation
. 2021 Jan 22;74(1):73-75.
doi: 10.7883/yoken.JJID.2020.332. Epub 2020 Jun 30.

Trends in COVID-19 Outbreak in Tokyo and Osaka from January 25 to May 6, 2020: a Joinpoint Regression Analysis of the Outbreak Data

Syed Mahfuz Al Hasan  1 , Jennifer Saulam  2 , Kanae Kanda  1 , Nlandu Roger Ngatu  1 , Tomohiro Hirao  1
Affiliations
Free article

Trends in COVID-19 Outbreak in Tokyo and Osaka from January 25 to May 6, 2020: a Joinpoint Regression Analysis of the Outbreak Data

Syed Mahfuz Al Hasan et al. Jpn J Infect Dis. .
Free article

Abstract

We analyzed the trends of the coronavirus disease 2019 (COVID-19) outbreak in Tokyo and Osaka from January 25 to May 6, 2020. To analyze the trends and identify significant changes in them, we performed a joinpoint regression analysis. From the last week of March, the number of COVID-19 cases soared in Tokyo (β = 103.51) and Osaka (β = 28.07). During the 2nd and 3rd weeks of April, both Tokyo (β = 157.53) and Osaka (β = 60.96) experienced peak growth in COVID-19 cases. Since almost 14 days after the state of emergency declaration, the number of cases showed a containment trend in Osaka, but continued to increase at a concerning rate in Tokyo (β = 90.66).

Keywords: COVID-19; Osaka; Tokyo; trend analysis.

PubMed Disclaimer