Decreased community-acquired pneumonia coincided with rising awareness of precautions before governmental containment policy in Japan

Google community mobility data provides regional-level movement trends by location type (retail and recreation, grocery and pharmacy, parks, transit stations, workplaces, and residential) as a relative change from the day-of-the-week-wise average from January 3 through February 6, 2020. We obtained the daily national average of Google mobility in Japan in all location types but residential to measure the contact behavior of individuals outside the home.

谷歌社区移动数据（Google Community Mobility Data）可提供按场所类型划分的区域级出行趋势，涵盖零售与娱乐场所、食品杂货店与药房、公园、公共交通站点、工作场所及居住场所，其数值为相较于2020年1月3日至2月6日期间各对应星期的日均基准的相对变化量。本研究获取了日本除居住场所外所有场所类型的谷歌社区移动数据的每日全国平均值，以此衡量民众的户外接触行为。