… We read with interest Adam Kucharski and colleagues' mathematical modelling study of
the early dynamics of coronavirus disease 2019 (COVID-19). We agree that a stochastic …

Background The isolation of symptomatic cases and tracing of contacts has been used as
an early COVID-19 containment measure in many countries, with additional physical …

INTRODUCTION Several novel variants of severe acute respiratory syndrome coronavirus 2
(SARS-CoV-2), the virus that causes COVID-19, emerged in late 2020. One of these, …

Adjusting for delay from confirmation to death, we estimated case and infection fatality ratios
(CFR, IFR) for coronavirus disease (COVID-19) on the Diamond Princess ship as 2.6% (95…

A basic reproduction number, R0, of about 2 was estimated for severe acute respiratory
syndrome coronavirus 2 (SARS-CoV-2) in Wuhan, China, early in the outbreak. 1, 2 However, …

Background Isolation of cases and contact tracing is used to control outbreaks of infectious
diseases, and has been used for coronavirus disease 2019 (COVID-19). Whether this …

Background In December, 2019, severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2),
a novel coronavirus, emerged in Wuhan, China. Since then, the city of Wuhan has …

Background The health impact of COVID-19 may differ in African settings as compared to
countries in Europe or China due to demographic, epidemiological, environmental and socio-…

Background The risk of severe COVID-19 if an individual becomes infected is known to be
higher in older individuals and those with underlying health conditions. Understanding the …

Background Non-pharmaceutical interventions have been implemented to reduce transmission
of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) in the UK. Projecting …