How to stop your glasses steaming up – and 19 other essential facts about face masks

How often should you wash a cloth mask? And how effective are the disposable ones? The expert guide to choosing, wearing and caring for your face covering

If I must wear a face mask, I’ll do so with a look of ironic detachment

I can’t help being sceptical about government rules, but I will cover up when I’m told to, writes Zoe Williams. Over to you, eyes

Obesity is a major risk factor for dying of Covid-19. We need to take it more seriously

Health officials need to emphasize the relation between obesity and Covid-19, and we need to treat it like other chronic diseases

I’ve been ill for months, but I still don’t know if it is Covid-19

I’ve had a fever, a cough and breathlessness since February, and been in and out of hospital. If it isn’t coronavirus, what is it?

Vitamin K found in some cheeses could help fight Covid-19, study suggests

Scientists in Netherlands explore possible link between deficiency and Covid-19 deaths

Snowflake or safety first? How face masks were drawn into Trump’s culture wars

Everything is partisan in the US now – even death. As such, choosing whether or not to cover your face has become a political statement, writes Arwa Mahdawi

I’m a GP who got coronavirus because I had no PPE. I feel guilty but also angry

We were left unprotected and felt like we were going into a battlefield. I don’t think our profession will ever be the same

Birds, buds and bright days: how spring can make us healthier and happier

Longer, lighter days can help us banish old habits, sleep better and improve our mental health, even during the lockdown

The Rules of Contagion by Adam Kucharski review – outbreaks of all kinds

Modellers have a saying: “If you’ve seen one pandemic, you’ve seen … one pandemic.” But patterns can be established to do with how things spread