Ukraine closes three quarters of its 219 land border checkpoints today in an effort to isolate the country from coronavirus, Prime Minister Denys Shmygal told reporters Wednesday. Quarantine areas are being established at the 49 land border crossings that remain open. In addition, the country closes all schools and bans mass events involving more that 200 people through early April. In shopping centers, entertainment areas and movie theaters will close. Mass transit is to continue normally — with overnight sterilizing of trains, trams and buses.