However, where there is significant community transmission (as determined by jurisdictional public health authorities), you may choose, or be required to, wear a mask. If physical distancing is difficult to maintain, for example on public transport, covering your face with a mask can provide some extra protection.

While a mask can be used as an extra precaution, you must continue to:

• stay at home if unwell
• maintain physical distance (more than 1.5 metres) from other people, when out
• avoid large gatherings and crowded indoor spaces
• practise hand and respiratory hygiene.

The main value of wearing a mask is to protect other people. If the person wearing the mask is unknowingly infected, wearing a mask will reduce the chance of them passing the virus on to others.

For people at increased risk of severe COVID-19 themselves ­because of older age or chronic illness, physical distancing is most important. If you cannot maintain physical distance, wearing a mask is an important protective measure.