Fig. 1From: A cross-country core strategy comparison in China, Japan, Singapore and South Korea during the early COVID-19 pandemicCOVID-19 outbreak curve and timeline of implementation of major interventions in China. Note: ① Jan 20, 2020, classification of infectious diseases. ② On Jan 23, Wuhan lockdown. ③ On Jan 25, a leading group was established by the central government to respond to the COVID-19 outbreak. ④ On Jan 29, raising the public health emergency response to the highest level in all localities. ⑤ On Feb 2, classifying management of “four categories of personnel”. ⑥ On Feb 5, makeshift hospitals in operation. ⑦ On Feb 13, pairing assistance. ⑧ On Feb 19, launching massive community screening. ⑨ On April 8, lifted the lockdown of Wuhan city. ⑩ On April 29, China had entered into a phase of ongoing prevention and controlBack to article page