infection, doctors/investigators
INFECTIOUS DISEASES, INFECTION, EMERGENCIES
The first cases of COVID‐19 infection were reported in China in late December 2019. Wuhan, the city most heavily infected, was locked down during 23 January–8 April 2020. This was regarded as the time period when the COVID‐19 epidemic was severe in mainland China. Radical public health measures including quarantine and social distancing were strictly implemented; therefore, in‐person visits of BPROAD participants with their doctors/investigators became unlikely.On 10 February 2020, the BPROAD Coordinating Center developed an urgent response plan to the outbreak of COVID‐19 according to the China Forums of Clinical Research Capacity Building and Human Research Participants Protection Consensus on Clinical Trial Management under First‐level Response to Major Public Health Emergencies (Infectious Diseases).