id author title date pages extension mime words sentences flesch summary cache txt cord-297618-9ka3y2y1 Chau, Pui Hing Construction of the Infection Curve of Local Cases of COVID-19 in Hong Kong using Back-Projection 2020-09-21 .txt text/plain 3717 177 54 The current study constructed an epidemic curve based on the date of infection estimated by the back-projection method to minimize the effects of the incubation time and reflect the possible impacts of various measures and events better. Our objective was to estimate the infection curve of the local cases of the first two waves of COVID-19 in Hong Kong using the back-projection method and explore the effectiveness of the preventive measures, including the possible impacts of the pre-implementation announcements by the local government. From 25 to 29 January 2020, numerous policies were announced and implemented, including activation of the Emergency Response Level, cancellation of large-scale events, quarantine of close contacts of confirmed cases, health advice to residents returning from the Hubei province and other parts of China, suspension of non-emergent government services, closure of public facilities, home office arrangement for civil servants, and substantial reduction of traffic between Mainland China and Hong Kong. ./cache/cord-297618-9ka3y2y1.txt ./txt/cord-297618-9ka3y2y1.txt