Background: Most government efforts to control the COVID-19 pandemic revolved around
non-pharmaceutical interventions (NPIs) and vaccination. However, many respiratory …

Background Maintaining effective contact tracing to control COVID-19 is challenging. Rapid
growth in the number of infected cases can overload tracing and testing capacity, resulting in …

Timely detection of an evolving event of an infectious disease with superspreading potential
is imperative for territory-wide disease control as well as preventing future outbreaks. While …

Background The impacts of non-pharmaceutical interventions (NPIs) and vaccine boosters
on the transmission of the largest outbreak of COVID-19 (the fifth wave) in Hong Kong have …

Many countries mandated social distancing measures during the COVID-19 pandemic of
2020 to 2022 that variously included opening hours restrictions on hospitality and retail …

Background: Since the emergence of the COVID-19 pandemic, many models have been
applied to understand its epidemiological characteristics. However, the ways in which …

Abstract Background The Delta variant of SARS-COV-2 has replaced previously circulating
strains around the world in 2021. Sporadic outbreaks of the Delta variant in China have …

The serial interval distribution is used to approximate the generation time distribution, an
essential parameter to predict the effective reproductive number “R t”, a measure of …

Background More than half of the population in Korea had a prior COVID-19 infection. In
2022, most nonpharmaceutical interventions, except mask-wearing indoors, had been lifted …

The COVID-19 epidemic we have experienced is unprecedented in scale and duration. The
interaction of multiple factors has led to a complex pattern in the development of the …