a medical mask is not required, as no evidence is
available on its usefulness to protect non-sick persons.
However, masks might be worn in some countries
according to local cultural habits. If masks are used, best
practices should be followed on how to wear, remove,
and dispose of them and on hand hygiene action after
removal (see below advice regarding appropriate mask
management). 

Individuals with respiratory symptoms should:
- wear a medical mask and seek medical care if
experiencing fever, cough and difficulty breathing, as
soon as possible or in accordance with to local protocols;
- follow the below advice regarding appropriate mask
management.