The South Korea Disease Control and Prevention Agency (KDCA) reported that 5 cases of the Omicron COVID-19 strain have been detected from travelers who had visited Nigeria from November 14 to 23.
Among the five cases was a fully vaccinated couple who arrived at the Incheon International Airport on Nov. 24 and tested positive the next day.
The three others were their friends who drove them home and their teenage son.
At least 2,776 people arrived in Korea from Africa before Nov. 28 when border restrictions have been tightened after the emergence of the omicron strain.
South Korea is currently dealing with a new surge and has recorded 452,350 COVID-19 cases, with 3,658 deaths so far.
KDCA announced that starting Friday for two weeks, all arrivals, vaccinated or not, will need to undergo quarantine for 10 days.
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