Some argue we should we all be wearing face masks to protect ourselves from the virus and to reduce the risk of asymptomatic carriers passing on the infection. Others argue they are ineffective when used improperly and should be reserved for medical workers only.

Guidance differs from country to country but, as it stands, the World Health Organization (WHO) advises against widespread face mask usage by the general public.

The WHO says only two groups of people should wear protective masks, those who are:

• sick and showing symptoms
• caring for people suspected to have the coronavirus