US President-elect Joe Biden and his wife, Jill Biden, will receive their first doses of the Covid-19 vaccine in public on Monday, according to incoming White House press secretary Jen Psaki, CNBC reported.

Vice President-elect Kamala Harris and her husband, Doug Emhoff, will receive their first doses of the vaccine a week after the Bidens do, Psaki told reporters during a briefing Friday.

The timeline is consistent with national security protocols designed to avoid a scenario in which both the president-elect and the vice president-elect experience side effects at the same time.

On Friday, Vice President Mike Pence and second lady Karen Pence became the highest-ranking US officials to receive the vaccine so far.

Outgoing President Donald Trump, however, has not yet indicated when he plans to be vaccinated.