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Differences in cesarean section numbers before and during the COVID-19 pandemic in Japan

August 26th, 2025

During the COVID-19 pandemic, cesarean sections were performed for shorter delivery times and infection control purposes, adhering to guidelines issued jointly by the Japan Society of Obstetrics and Gynecology, Japan Obstetricians and Gynecologists Association, and Japanese Society of Obstetric Infectious Diseases. These measures may have contributed to the increased number of cesarean sections, thereby affecting many women in Japan. However, the number of cesarean sections before and after the COVID-19 pandemic had not been previously evaluated.

In a new study published in the Journal of Obstetrics and Gynaecology Research, researchers at the University of Tsukuba compared the percentage of births via cesarean section (total number of cesarean sections divided by total number of births) for the entire country using data and demographic statistics extracted specifically from the National Health Insurance Database from April 2018 to October 2022.

The percentage of births by cesarean section before the COVID-19 pandemic (April 2018–December 2019) was 20.27%, increasing to 21.19% during the pandemic (January 2020–October 2022). The percentage of births by cesarean section in Japan varied by pandemic wave, peaking at 22.14% during the sixth wave (January–June 2022) and decreasing to 21.27% during the seventh wave (July–October 2022). These findings indicate a slight nationwide increase in the number of cesarean sections during the COVID-19 pandemic.

Although the number of cesarean sections in Japan has been increasing in recent years, this study did not consider this increasing trend prior to the data period due to the limited timeframe of the available data. Given the findings of this study, appropriate childbirth methods should be discussed during future infectious disease outbreaks and possible countermeasures explored.

More information:
Kensuke Shimada et al, Changes in proportions of Cesarean section before and during the COVID‐19 pandemic in Japan, Journal of Obstetrics and Gynaecology Research (2025). DOI: 10.1111/jog.16370

Provided by University of Tsukuba

Citation: Differences in cesarean section numbers before and during the COVID-19 pandemic in Japan (2025, August 26) retrieved 28 August 2025 from https://sciencex.com/wire-news/517656207/differences-in-cesarean-section-numbers-before-and-during-the-co.html

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