Strong decline in coronavirus across England since January, React study shows
Study finds infections fell by two-thirds - and more in London - but warns virus levels remain high.
Author Archives: BBC News - Health
Covid-19: What are challenge trials and why do we need them?
Some volunteers in the UK will be deliberately infected with coronavirus in a "challenge trial".
Covid: Seven symptoms should trigger virus test, study says
Fatigue, headache, sore throat and diarrhoea are also warning signs of the virus, research suggests.