Global disease experts say little is known about China's experience with long-term COVID effects thought to have afflicted millions with debilitating fatigue, brain fog and other symptoms
"We are seeing community transmission of the omicron variant in the capital region," Health Undersecretary Maria Rosario Vergeire told a public briefing.
The region is an urban sprawl of 16 cities home to more than 13 million people.
The community transmission of the omicron variant is characterised by a steep rise in cases, Vergeire said, adding that infections may peak from the end of this month to mid-February.
The ministry reported 39,004 new COVID-19 infections on Saturday, while active cases also hit a record, at 280,813.
With more than 3.16 million cases and nearly 53,000 deaths, the Philippines has the highest COVID-19 infections and casualties in Southeast Asia after Indonesia.