KYIV—Ukraine is planning compulsory COVID-19 vaccinations for some jobs, including teachers and employees of state institutions, and local governments, Health Minister Oleh Lyashko said on Wednesday. The new requirements would be introduced after a final decision by the ministry in coming days. “We propose to start the introduction of mandatory preventive vaccinations against acute respiratory disease COVID-19,” Lyashko said during a televised government meeting. Ukraine is tightening lockdown restrictions from Thursday after a sharp rise in the number of infections. It has imposed a nationwide “yellow” code, which restricts mass events and limits occupancy rates at gyms, cinemas, and other venues. Schools, universities, and companies with fully vaccinated staff are allowed to work without restrictions. Ukraine, with 41 million people, is lagging behind European neighbors with vaccinations—only 5.2 million people have received two shots so far. The country has reported 2.4 million infections and 55,161 COVID-19-related deaths since the start …