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OVERVIEW: U.S. Cases See Christmas Low; Japan’s Entry Ban: Virus Update

What we know about the UK coronavirus variant

Japan, France, Sweden report cases of coronavirus variant found in UK

Covid-19: US imposes tests on UK airline passengers

All airline passengers arriving in the US from the UK are to be required to test negative for Covid-19 within 72 hours of departure amid concerns about a new coronavirus variant.

From 28 December travellers will need to provide written documentation of their test result to airlines.

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New studies find having COVID-19 may protect against reinfection

Two new studies give encouraging evidence that having COVID-19 may offer some protection against future infections. Researchers found that people who made antibodies to the coronavirus were much less likely to test positive again for up to six months and maybe longer.

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Chinese vaccine test results delayed, first vaccine batches reach Latin America

Britain finds 2 cases of coronavirus variant linked to South Africa; travel resumes across English Channel

Coronavirus Variant Is Indeed More Transmissible, New Study Suggests

A team of British scientists released a worrying study on Wednesday of the new coronavirus variant sweeping the United Kingdom. They warned that the variant is so contagious that new control measures, including closing down schools and universities, might be necessary. Even that may not be enough, they noted, saying, “It may be necessary to greatly accelerate vaccine rollout.”

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NIH awards ore than $107M in broad effort to find new COVID-19 testing, surveillance ideas

Interactive map shows state by state coronavirus situation --NPR

What the data say about border closures and COVID spread

As countries in Europe rush to close their borders to the United Kingdom to prevent transmission of a new — and potentially more transmissible — variant of SARS-CoV-2, research has estimated the effect of international travel restrictions on COVID-19 spread earlier in the pandemic.

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Vaccine opponents outline online campaigns to sow distrust in coronavirus vaccine

Can Travel Bans Really Stop the Spread of Coronavirus Variants? Experts Are Skeptical

LONDON — As nation after nation rushed this week to close their borders with Britain, the moves brought back memories of the way the world reacted after the coronavirus first emerged broadly in the spring. Most of those initial travel prohibitions came too late, put in place after the virus had already seeded itself in communities far and wide.

This time, with countries trying to stop the spread of a new, possibly more contagious coronavirus variant identified by Britain, it may also be too late. It is not known how widely the variant is already circulating, experts say, and the bans threaten to cause more economic and emotional hardship as the toll wrought by the virus continues to grow.

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Pulse Oximeter Devices Have Higher Error Rate in Black Patients--New study

Pulse oximeters are one of the most commonly used tools in medicine. The small devices, which resemble a clothespin, measure blood oxygen when clipped onto a fingertip, and they can quickly indicate whether a patient needs urgent medical care.

Health providers use them when they take vital signs and when they evaluate patients for treatment. Ever since the pandemic started, doctors have encouraged patients with Covid to use them at home.

But in Black patients, the devices can provide misleading results in more than one in 10 people, according to a new study.

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UK military to support coronavirus testing as business groups warn of food supply issues

British military personnel will be supporting efforts to carry out coronavirus tests, beginning Wednesday, for hauliers currently stranded in Kent, near the Port of Dover, the UK Ministry of Defense said Wednesday.

"Starting today, 170 personnel will support COVID-19 testing for hauliers travelling to France from Kent," the MOD said in a tweet. "The support from our Armed Forces personnel will help to get hauliers moving again."

Police at the port told a CNN team there that some form of mobile coronavirus testing is also expected to arrive at the port in the next few hours, however they could not confirm where the testing would take place. 

The announcement comes hours after the UK and France agreed to allow truck drivers to travel across the English Channel from the Port of Dover -- the UK’s main gateway to France and the Continent for freight transportation -- providing they have proof of a negative coronavirus test result.

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