COVID-19 cases are popping up nationwide and South Korea's health authorities say the country is on the edge of entering a fourth wave.
According to a senior official at the Central Disaster and Safety Countermeasure Headquarters, the situation is worsening and the public has to remain alert.
From mid-January to March, there were on average 300 to 400 new daily cases in South Korea.
By April, that number had jumped to 500 to 600.
Now, it's over 700.
More than 70 percent of cases are also coming from the heavily-populated capital region.
On top of that, of about 81-hundred newly-infected people over the past two weeks, the route of infection of 28 percent of them is unknown.
South Korea's health authorities say the distancing level could be tightened further, but they are concerned about the economic damage that would cause.
South Korea recorded 731 new COVID-19 cases on Wednesday.
Of them, 714 were locally transmitted and the rest from overseas.
There are one-hundred severely ill patients and seven additional deaths.
As of Wednesday, more than one.two million people in South Korea have received their first dose of a COVID-19 vaccine.
Jang Tae-hyun, Arirang News.