"There is nothing to worry about. I am looking forward to the second shot," Biden said from the hospital.
Biden received the first dose of the vaccine made by Pfizer, the first to be approved by U.S. regulators.
Jill Biden, the new first lady, received a dose of the vaccine earlier that day, and the new Vice President, Senator Kamala Harris, will be vaccinated next week.
As we reported earlier, the European Medicines Agency (EMA) has officially approved the use of the coronavirus vaccine, which was developed by the American Pfizer and the German BioNTech, across the European Union.
“It is a decisive moment in our efforts to deliver safe and effective vaccines to Europeans," Commission President Ursula von der Leyen tweeted.
Authorities in Germany and several other European countries stated that they hoped to begin giving the vaccine to people on December 27.