NAIROBI, Jan. 15 (Xinhua) — Kenya intends to administer 4.2 million COVID-19 booster shots by June to all eligible adults and fully vaccinate 19 million, the Ministry of Health said in a vaccination strategy document released on Saturday.

“Kenya plans to fully vaccinate 19 million people (70 percent of the adult population) by the end of June and the entire adult population of 27 million people by the end of the year,” said the ministry. During the period, the East African nation also aims to fully vaccinate 2.9 million teenagers aged 15-17 and the entire teenage population of 5.8 million by year-end, said the ministry. Kenya started the rollout of booster shots this month amid a surge in COVID-19 cases fueled by the Omicron variant. The ministry said the Kenyan government had laid out plans to administer at least 20 million vaccine doses between January and June to achieve the mid-year targets.