South Korea like many other nation’s in the world has issues with COVID vaccine hesitancy:
Contrary to health authorities’ expectations for high turnouts, there was a great deal of hesitancy about getting the shots, largely driven by safety concerns over AstraZeneca (AZ) jabs — the bulk of which the country has procured for its 51.3 million citizens.
“Rumors and unfounded arguments about AZ side effects circulated through mainstream and social media,” Chun Eun-mi, a professor at Ewha Womans University Medical Center, said. “The deaths and severe abnormal reaction cases, like the 40-something nurse who suffered quadriplegic symptoms, added to the fears,” she said.
An April survey by Hankook Research conducted on 1,000 adults showed that 61.4 percent of the respondents said they were willing to get vaccinated, down 6.6 percentage points from its March survey. More than 84 percent of them cited the fears about abnormal reactions.
Yonhap News
You can read more at the link, but according to the article the South Korean public is beginning to become more willing to get the vaccine.
