The effect of human mobility and control measures on the COVID-19 epidemic in China
Moritz UG Kraemer,
David M. Pigott,
open COVID-19 data working group,
Louis Raymond du Plessis,
Nuno R. Faria,
William P. Hanage,
John S Brownstein,
Oliver G. Pybus,
Samuel V. Scarpino
Posted 06 Mar 2020
medRxiv DOI: 10.1101/2020.03.02.20026708
Posted 06 Mar 2020
The ongoing COVID-19 outbreak has expanded rapidly throughout China. Major behavioral, clinical, and state interventions are underway currently to mitigate the epidemic and prevent the persistence of the virus in human populations in China and worldwide. It remains unclear how these unprecedented interventions, including travel restrictions, have affected COVID-19 spread in China. We use real-time mobility data from Wuhan and detailed case data including travel history to elucidate the role of case importation on transmission in cities across China and ascertain the impact of control measures. Early on, the spatial distribution of COVID-19 cases in China was well explained by human mobility data. Following the implementation of control measures, this correlation dropped and growth rates became negative in most locations, although shifts in the demographics of reported cases are still indicative of local chains of transmission outside Wuhan. This study shows that the drastic control measures implemented in China have substantially mitigated the spread of COVID-19.
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