The four colour-coded response levels are:
? (Red) Critical ? community spread of COVID-19 is not contained and/or there are significant strains on the health-care system;
? (Orange) Restricted ? community transmission of COVID-19 is occurring, public health measures are being taken to manage the negative impact on human health and/or the health system;
? (Yellow) Caution ? community transmission of COVID-19 is at low levels; and
? (Green) Limited risk ? the spread of COVID-19 is broadly contained and a vaccine and/or effective treatment is available.