EU countries started inoculations on December 27 with the BioNTech/Pfizer vaccine, but progress has been much slower than in the United States, Britain or Israel.
China approved a COVID-19 vaccine developed by an affiliate of state-backed pharmaceutical giant Sinopharm on Thursday, its first approved shot for general public use.
Britain became the first country in the world to give full regulatory approval to the coronavirus vaccine developed by Oxford University and AstraZeneca.
The AstraZeneca-Oxford vaccine is currently undergoing a "rolling review" which allows the EMA to examine safety and efficacy data as they are released.