The government said on Sunday that the first batch of COVID-19 vaccines from U.S. biotech company Moderna will arrive in South Korea one day later than scheduled.

The vaccine task force said in a release on Sunday that due to "local circumstances" in the U.S., the initial shipment of 55-thousand doses will arrive at Incheon International Airport at 12:45 p.m. Tuesday.  
  
The batch, enough for 27-thousand-500 people, was initially scheduled to arrive on Monday.

South Korea signed a contract last year to bring in enough Moderna vaccines for 20 million people. 

The vaccines will be administered to health workers under the age of 30 starting in mid-June.