Severe acute respiratory syndrome coronavirus 2 viral load in the upper respiratory tract
peaks around symptom onset and infectious virus persists for 10 days in mild-to-moderate …

Background Understanding severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2)
infection and transmission in educational settings is crucial for ensuring the safety of staff …

PURPOSE: Innovative technologies to deliver health care across borders have attracted
both evangelists and sceptics. Our aim was to systematically identify factors that hinder or …

Background The international spread of poliovirus exposes all countries to the risk of outbreaks
and is designated a Public Health Emergency of International Concern by WHO. This …

Background Little is known about the risk of SARS-CoV-2 infection and transmission in
educational settings. Public Health England initiated a study, COVID-19 Surveillance in School …

Background After decades of decreasing scarlet fever incidence, a dramatic increase was
seen in England beginning in 2014. Investigations were launched to assess clinical and …

In the UK, COVID-19 vaccination for adults began in December, 2020. 1 Because children
and adolescents have a low risk of severe COVID-19 and due to concerns about rare but …

Crises caused by armed conflict, forced population displacement, or natural disasters result
in high rates of excess morbidity and mortality from infectious diseases. Many of these crises …

Introduction The reopening of schools during the COVID-19 pandemic has raised concern
for the safety of staff and students, their families and the wider community. We monitored …

We investigated a COVID-19 outbreak of the SARS-CoV-2 Delta variant of concern in a
London care home, where 8/21 residents and 14/21 staff had received a single dose of …