SEOUL, South Korea — South Korean President Moon Jae-in has received his first shot of AstraZeneca’s vaccine as he plans to attend June’s Group of Seven meetings in Britain.

Moon on Tuesday received his shot at a public health office in downtown Seoul along with his wife and other presidential officials who plan to accompany him during the June 11-13 meetings.

Moon’s office said he was feeling “comfortable” after receiving the shot and complimented the skills of a nurse who he said injected him without causing pain.

The office said Moon will likely receive his second dose sometime around mid-May.

South Korea launched its mass immunization program in February and plans to deliver the first doses to 12 million people through the first half of the year, including elders, frontline health workers and people in long-term care settings.

Officials aim to vaccinate more than 70% of the country’s 51 million population by November, which they hope would meaningfully slow the virus and reduce risks of economic and social activity.