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Volume 26, Number 6—June 2020
Research

Temporary Fertility Decline after Large Rubella Outbreak, Japan

Kenji MizumotoComments to Author  and Gerardo Chowell
Author affiliations: Kyoto University, Kyoto, Japan, and Hokkaido University, Hokkaido, Japan (K. Mizumoto); Georgia State University, Atlanta, GA, USA (K. Mizumoto, G. Chowell); Fogarty International Center, National Institutes of Health, Bethesda, Maryland, USA (G. Chowell)

Main Article

Table

Summary results on the timing of peak rubella cases and deficit fertility rates for 4 prefectures in Japan, 2013*

Prefecture
 Peak month for Google searches, 2013
 Decreased fertility, 2014
Lag time troughs, mo.
Month of lowest birth rates
 Deficit rate at lowest month†
 Peak rubella incidence–fertility rate decline
 Peak Google search–fertility rate decline
Rubella case peaks, 2013
Month
 No. cases
Tokyo Apr 571 Apr Mar –0.090 11 11
Kanagawa Apr 305 Apr Mar –0.130 11 11
Osaka May 730 May Feb –0.120 9 9
Hyogo May 260 May Apr –0.111 11 11

*Data on Google searches collected from Google Trends (https://trends.google.com).
†Irregular only.

Main Article

Page created: May 18, 2020
Page updated: May 18, 2020
Page reviewed: May 18, 2020
The conclusions, findings, and opinions expressed by authors contributing to this journal do not necessarily reflect the official position of the U.S. Department of Health and Human Services, the Public Health Service, the Centers for Disease Control and Prevention, or the authors' affiliated institutions. Use of trade names is for identification only and does not imply endorsement by any of the groups named above.
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