2021-02-01 22:06:44 GMT2021-02-02 06:06:44(Beijing Time) Xinhua English A medical worker receives an injection with a dose of COVID-19 vaccine at the Spallanzani Hospital in Rome, Italy, Dec. 27, 2020. (Photo by Andrea Sabbadini/Xinhua) ROME, Feb. 1 (Xinhua) -- The European Union's (EU) vaccine rollout plan has been thrown into disarray after the manufacturers of all three vaccines approved for use in Europe warned countries of delivery delays over the coming weeks and months. The announcements prompted German Chancellor Angela Merkel on Monday to call an emergency meeting with regional leaders and vaccine makers. Italy is mulling a lawsuit against pharmaceutical companies that have failed to honor vaccine supply schedules.