New restrictions could have dire consequences for people to meet their basic needs, including getting enough food, Liz Throssell said.
The daily positivity rate was recorded at 0.44% and the weekly positivity rate was recorded at 0.59%.
State media said North Korea's anti-virus headquarters reported another 269,510 people with fevers and six people died.
The confirmed number of dead is equivalent to a 9/11 attack every day for 336 days. It is roughly equal to how many Americans died in the Civil War and World War II combined.
The researchers have argued that offering people an Omicron-adapted booster shot may be more beneficial than multiple ones with the original vaccines.
The daily positivity rate was recorded at 0.74% and weekly positivity rate was recorded at 0.59%, according to the health ministry.
The death toll climbed to 5,24,214 with 13 fatalities, the data updated at 8 am stated.
The city of 25 million people has been locked down for more than six weeks as its battles a COVID outbreak.