Coronavirus updates: Herd immunity by fall 'ambitious,' says surgeon general nominee

In 44 states, the seven-day average of new cases dropped over 10%.

A pandemic of the novel coronavirus has now infected more than 98.7 million people worldwide and killed over 2.1 million of them, according to real-time data compiled by the Center for Systems Science and Engineering at Johns Hopkins University.


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California reports highest daily death toll

California reported its highest daily death toll since the start of the pandemic with another 764 lives lost.

The state reported 23,024 new cases on Friday.


Severe allergic reactions rare but possible with Moderna vaccine

A CDC report released Friday indicates that the risk of severe allergic reactions with Moderna's vaccine is low. Severe, life threatening allergic reactions were seen in 2.5 cases per million people receiving the first dose of the Moderna COVID-19 vaccine, the report said.

Of the 4,041,396 first doses given as of Jan. 10, there were 1,266 (0.03%) reports of "adverse events," the report said. Among those, 108 "adverse events" were considered as possible cases of severe allergic reaction, including anaphylaxis. Ten cases were determined to be anaphylaxis (a rate of 2.5 anaphylaxis cases per 1 million doses) including nine people with a documented history of allergies or allergic reactions, the report said.

ABC News’ Sony Salzman contributed to this report.


UK variant may be associated with higher mortality, Boris Johnson says

More people are testing positive for the United Kingdom’s variant of the coronavirus, and British Prime Minister Boris Johnson said Friday “there is some evidence that the new variant may be associated with a higher degree of mortality.”

U.K. Chief Medical Officer Chris Whitty stressed that the data is uncertain and there is a chance the new variant is increasing infections and mortality.

The U.K. has seen record daily death tolls several times this week.

There were 1,401 deaths in the last 24 hours.

ABC News’ Kirit Radia, Sony Salzman and Joe Simonetti contributed to this report.


New York running out of vaccines today but more on the way: Cuomo

New York state has used 97% of its allocated vaccine doses so far (for weeks 1 through 5) and will run out of doses by the end of the day, Gov. Andrew Cuomo said Friday.

Week 6 doses are currently being delivered, the governor said.

New York’s positivity rate has fallen to 5.65%, Cuomo said. Hospitalizations are also on the decline.

ABC News’ Rachel Katz contributed to this report.


Biden administration won't lift travel restrictions for Europe, Brazil

Shortly after U.S. President Donald Trump announced his administration would be lifting COVID-19 travel restrictions for the United Kingdom, Brazil and much of Europe, President-elect Joe Biden's team said that would not be the case.

Biden's incoming White House press secretary, Jen Psaki, said the new administration doesn't intend to lift the travel restrictions next week.

"With the pandemic worsening, and more contagious variants emerging around the world, this is not the time to be lifting restrictions on international travel," Psaki wrote on Twitter late Monday. "On the advice of our medical team, the Administration does not intend to lift these restrictions on 1/26. In fact, we plan to strengthen public health measures around international travel in order to further mitigate the spread of COVID-19."

Trump issued a proclamation earlier Monday night, announcing he will rescind entry bans imposed because of the coronavirus pandemic on most non-U.S. citizens arriving from Brazil, the United Kingdom and much of Europe.

The travel restrictions were put in place last year toward the beginning of the pandemic, following calls from health officials who urged the president to stop the spread of the novel coronavirus.

The proclamation said the entry bans will be removed starting Jan. 26, the same day that all travelers must present a negative COVID-19 test or proof of recovery from the disease in order to enter the United States. Biden and his administration will be sworn in Wednesday.

"Public health officials in the jurisdictions have a proven record of working with the United States to share accurate and timely COVID-19 testing and trend data, and the United States has active collaborations with the jurisdictions regarding how to make travel safe between our respective countries," the proclamation states.

ABC News' Elizabeth Thomas contributed to this report.