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An interactive web-based mapping platform that provides timely quantitative information on how people in different counties and states reacted to the social distancing guidelines was developed by the GeoDS Lab @UW-Madison with the support of the National Science Foundation RAPID program. The web portal integrates geographic information systems (GIS) and daily updated human mobility statistical patterns (median travel distance and stay-at-home dwell time) derived from large-scale anonymized and aggregated smartphone location big data at the county-level in the United States, and aims to increase risk awareness of the public, support data-driven public health and governmental decision-making, and help enhance community responses to the COVID-19 pandemic.<\/jats:p>","DOI":"10.1145\/3404820.3404824","type":"journal-article","created":{"date-parts":[[2020,7,8]],"date-time":"2020-07-08T12:03:47Z","timestamp":1594209827000},"page":"16-26","update-policy":"https:\/\/doi.org\/10.1145\/crossmark-policy","source":"Crossref","is-referenced-by-count":229,"title":["Mapping county-level mobility pattern changes in the United States in response to COVID-19"],"prefix":"10.1145","volume":"12","author":[{"given":"Song","family":"Gao","sequence":"first","affiliation":[{"name":"University of Wisconsin-Madison, WI"}]},{"given":"Jinmeng","family":"Rao","sequence":"additional","affiliation":[{"name":"University of Wisconsin-Madison, WI"}]},{"given":"Yuhao","family":"Kang","sequence":"additional","affiliation":[{"name":"University of Wisconsin-Madison, WI"}]},{"given":"Yunlei","family":"Liang","sequence":"additional","affiliation":[{"name":"University of Wisconsin-Madison, WI"}]},{"given":"Jake","family":"Kruse","sequence":"additional","affiliation":[{"name":"University of Wisconsin-Madison, WI"}]}],"member":"320","published-online":{"date-parts":[[2020,7,8]]},"reference":[{"key":"e_1_2_1_1_1","unstructured":"About 95% of Americans have been ordered to stay at home. 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