South Korea breaks its daily record for coronavirus infections for a second straight day with more than 5,200 new cases, as pressure mounts on a health care system grappling with rising hospitalizations and deaths.
The rapid Delta-driven spread comes amid the emergence of the new Omicron variant, which is seen as potentially more contagious than previous strains of the virus, and has fueled concerns about prolonged pandemic suffering.
Since detecting its first Omicron infections on Wednesday, South Korea has confirmed six cases, all linked to arrivals from Nigeria, prompting the government to tighten its border controls.
The country will require all passengers arriving from abroad over the next two weeks to quarantine for at least 10 days, regardless of their nationality or vaccination status. South Korea since Sunday had already banned short-term foreign travelers arriving from eight southern African nations, including South Africa, and has now extended the same rules to foreigners coming from Nigeria.