A fast-spreading SARS-CoV-2 variant identified in the United Kingdom in December 2020 has raised international alarm. We estimate that, in 16 out of 1...Read more

最近的一项研究表明，COVID-19患者可能在出现症状前两到三天开始排放病毒，峰值排放发生在症状出现前的0.7天。该研究估计44%的继发病例在无症状阶段被感染，病毒的传播速率在七天内迅速下降。该研究由广州市第八人民医院和香港大学公共卫生学院的研究团队进行。...

Estimating the time-varying reproductive number, Rt, is critical for monitoring transmissibility of an infectious disease. The impact of imported case...Read more

Background: Various public health and social measures (PHSMs) have been implemented worldwide to fight against COVID-19 pandemic since early 2020. T...Read more

Background The generation time distribution, reflecting the time between successive infections in transmission chains, is one of the fundamental epide...Read more

Background Data on the effectiveness of oral antivirals in patients with mild-to-moderate COVID-19 are urgently needed. This retrospective cohort stu...Read more

Superspreading, or overdispersion in transmission, is a feature of SARS-CoV-2 transmission which results in surging epidemics and large clusters of in...Read more

Transmission heterogeneity is a notable feature of the severe acute respiratory syndrome (SARS) and coronavirus disease 2019 (COVID-19) epidemics, tho...Read more

China implemented stringent non-pharmaceutical interventions (NPIs) in spring 2020, which has effectively suppressed SARS-CoV-2. In this study, we uti...Read more

Objectives: There was initially insufficient understanding regarding suitable pharmacological treatment for pediatric Coronavirus Disease 2019 (COVID-...Read more

Background: Various non-pharmaceutical interventions (NPIs) were implemented globally to mitigate COVID-19, which could have modulated the transmissio...Read more

Elevations in alanine aminotransferase (ALT) and aspartate aminotransferase (AST) were reported as adverse events of nirmatrelvir/ritonavir users in t...Read more

Background: Hong Kong followed a strict COVID-19 elimination strategy in 2020. We estimated the impact of the COVID-19 pandemic responses on all-cause...Read more

An amendment to this paper has been published and can be accessed via a link at the top of the paper....

HKUMed researchers found a significant reduction in public hospital admissions and an increase in mortality, particularly from cardiovascular diseases...Read more

BACKGROUND: The initial cases of novel coronavirus (2019-nCoV)–infected pneumonia (NCIP) occurred in Wuhan, Hubei Province, China, in December 2019 an...Read more

The generation time distribution, reflecting the time between successive infections in transmission chains, is a key epidemiological parameter for des...Read more

Controlling transmission in restaurants is an important component of public health and social measures for coronavirus disease. We examined the effect...Read more