President-elect Joe Biden’s plan to boost the Covid-19 vaccine rollout – including by spending $20 billion to create mass vaccination centers – should help speed up putting shots into the arms of millions of Americans, experts and officials told Reuters.

Nearly 9 million Americans had been given their first Covid-19 vaccination dose as of Jan. 11, the U.S. Centers for Disease Control and Prevention said, as states scrambled to step up inoculations that have yet to slow the roaring pandemic.

China approved a Covid-19 vaccine developed by an affiliate of state-backed pharmaceutical giant Sinopharm on Dec. 31, the country’s first approved shot for general public use as it braces for increased transmission risks over winter.

Millions of Covid-19 vaccines were sitting unused in U.S. hospitals and elsewhere a week into the massive inoculation campaign, putting the government’s target for 20 million vaccinations during December in doubt.

A panel of outside advisers to the U.S. Food and Drug Administration is expected to endorse emergency use of Moderna Inc.’s coronavirus vaccine during a meeting on Dec. 17, as the nation prepares to roll out a second vaccine.

The number of coronavirus deaths in the United States crossed 300,000 on Dec. 14, according to a Reuters tally, as the hardest hit nation rolled out its first vaccine inoculations on the same day.

The United States hit a record 16 million Covid-19 cases on Dec. 12, with deaths closing in on the 300,000 mark, as millions of doses of a new vaccine were expected to start rolling out across the nation on Dec. 13.

The United States authorized the use of Pfizer Inc’s Covid-19 vaccine on Dec. 11, with the first inoculations expected within days, marking a turning point in a country where the pandemic has killed more than 295,000 people.

Companies and industry groups lobbying to get their U.S. workers to the front of the line for COVID vaccination are running into a patchwork of state plans and confusion over who is essential, and who is not.

Aviation industry opposition to requiring mandatory Covid-19 vaccination for passengers intensified as impending drug approvals trigger a debate over their role in air travel.