South Korean Prime Minister Kim Boo-kyum tested positive for the coronavirus, Reuters quotes his office as saying, as daily infections hit unprecedented levels this week, driven by the spread of the highly transmissible Omicron variant.

Kim has steered anti-virus efforts, holding regular meetings with officials and experts, and visiting medical and educational facilities to check quarantine work and promote vaccination.

“He was coughing a bit this morning but is now only having mild cold symptoms,” an official said.