The Novel Coronavirus Response and Coordination Centre announces that in response to the changes of the epidemic situation, the criteria for setting up a lockdown zone (red-coded zone) has been altered from buildings with two COVID-19 positive cases to be subject to control measures, to buildings with two flats or two families (collectively living in more than one room) with positive cases to be subject to control measures.

Under the new criteria, buildings with only one flat or one family with positive cases to be subject to control measures will be classified as a precautionary zone (yellow-coded zone). Buildings that were originally classified as a lockdown zone (red-coded zone) that do not fulfil the new criteria will be re-classified into a precautionary zone (yellow-coded zone) after completion of at least one nucleic acid test.