In this week's RAZOR special, we explore viruses, viral mutations, RNA and DNA, plus we have gone back to basics, and ask, what is a virus?

Tedros Adhanom Ghebreyesus, the director-general of the World Health Organization, has said: "We're not just fighting an epidemic, we're also fighting an 'infodemic' of misinformation." For example, we've seen reports that 5G spreads coronavirus, that a vaccine already exists but is not being used, or that alcohol is a cure. 

Richard Horton is editor-in-chief of The Lancet, a world-leading medical journal. He says the true facts about the outbreak have been known since January.

A lack of testing has frustrated many across the world. But residents in the small Californian town Bolinas decided to take matters into their own hands. Yyri Engstrom and Cyrus Harmon had heard about the Italian town of Vo, which saved many lives by testing the entire population. This drove them to do the same, with astounding results. 

There are still a lot of unknowns about the virus that causes COVID-19. Why are some people severely affected, while others only become mildly ill and why do some have no symptoms at all? The COVID Symptom Study App is designed to examine the virus further and track its spread.

We all know the impact the COVID-19 pandemic is having on our physical health... but what about our mental health? From reports of post-traumatic stress disorder in health workers to trauma and anxiety felt by children under lockdown, this pandemic is proving to be as much a battle of the mind as it is of the body. 

Over the past few weeks, we've been talking to doctors on the front line of the response to COVID-19. Javid Abdelmoneim is an emergency physician who has become increasingly concerned about the disproportionate effect that COVID-19 has had on healthcare workers from black and ethnic minority backgrounds.