U.K. regulators approve Pfizer vaccine for distribution ahead of European Union

The U.K. has become the first country in the world to approve Pfizer's coronavirus vaccine for distribution. U.K. officials said they'll be ready to start administering the vaccine as early as next week. CBS News foreign correspondent Charlie D'Agata joined "CBSN AM" to explain how the U.K. was able to move ahead without the European Union and what happens to the AstraZeneca vaccine being tested by Oxford.