As the government works to roll out newly received AstraZeneca vaccines, it has issued renewed calls for the public to remain at home.
Health Permanent Secretary Dr James Fong said continued increases in cases which can't be tracked means containment zones will remain.
"The confirmation of cases of unknown origin, in particular, indicates the virus could still be present in all six areas, so the borders must be enforced, as must the other restrictions we have in place," Dr Fong said.
"When the data tells us to proceed in a different direction -- we'll tell you."