Editor's note

As researchers accelerate their efforts to find vaccines and treatments that will work against COVID-19, testing for coronavirus has been a cornerstone in tackling the disease, both for understanding how dangerous it is and working out who should be isolated. While mass testing has taken place in countries like South Korea, others such as the UK haven’t done so on that scale.

There are now a number of new rapid tests being offered for sale, some selling for as high as £375. But how do these tests actually work and if making one can cost as little as 50p, why are they not cheaper and more widespread? Al Edwards, who is working to develop a blood test for the virus, explains why, and what the dangers are if these tests prove unreliable. He also has the answer for why it’s taking time to perfect a reliable test that can tell if you’ve previously had the virus – something that the UK’s chief medical adviser said would be “transformational”. Watch this space.

If you’ve found yourself unexpectedly familiar with hearing about SAGE recently (that’s the Science Advisory Group for Emergencies) but not sure what they do, read this explainer. And as people find yet more innovative ways to stay connected during a period of home confinement, online video games can be a good space to make and develop new friendships.

Jo Adetunji

Deputy Editor

Top stories

Taking a swab. Andrey_Popov/Shutterstock

COVID-19 tests: how they work and what’s in development

Alexander Edwards, University of Reading

Scientists are working hard to develop reliable tests that can detect anti-virus antibodies from past infection.

Patrick Vallance currently heads up SAGE. Eddie Mullholland/EPA

Coronavirus: a former member of SAGE explains how the science advisory group really works

Ian Boyd, University of St Andrews

Science Advisory Group for Emergencies is not a secret cabal.

World of Warcraft’s open world fosters connection and has led to people making meaningful connections. Blizzard

Coronavirus: making friends through online video games

Mark Griffiths, Nottingham Trent University

As people social distance, a new social life and community can be found online.

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