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The United Kingdom says it will be the first to conduct COVID-19 vaccine human challenge trials.It's different than other vaccine studies. People will be deliberately infected with the virus, which speeds up the research process.Pending approval, the process will start in January at a London hospital. It will require about 90 healthy young adults between the ages of 18 and 30.The group 1 Day Sooner has recruited from all over the world, including 3,000 Britons.“If the vaccine works, then ideally, people don't get infected and if people do, then they will be closely monitored and treated, but because these are young and healthy people taking part in the trial, I think, researchers feel comfortable doing so because the risks of death are on par with something like kidney donation for people who are young and healthy,” said Abie Rohrig with 1 Day Sooner.Before researchers test the vaccine, they'll do a characterization study. That's where volunteers are infected by getting a vaccine to determine the right amount of virus to give during the trial.Because of the risk, 1 Day Sooner is advocating for the entire process to be made public.Results could come in May. Even though that's likely after other COVID-19 vaccines are licensed, it's still important because we need billions of doses and because of the unique data human challenge trials provide.“Researchers can understand how the virus works in the human body. They can understand the biological markers of immunity. In fact, much of our understanding of other types of coronaviruses come from challenge studies that were conducted in the 1960s in Britain,” said Rohrig.Human challenge volunteers are paid and monitored for at least a year after. 1722

The Trump administration has closed the Washington Monument because of a recent visit by Interior Secretary David Bernhardt, who tested positive this week for the coronavirus. Interior spokesman Nicholas Goodwin says a couple of monument workers were quarantined as a result of Bernhardt's visit, forcing a staffing shortage and the monument's closure. The Interior Department announced Bernhardt's positive test result for the coronavirus on Wednesday. An advocacy group for parks criticized Bernhardt, saying he had failed to safeguard park employees overall during the pandemic. Goodwin said the interior secretary wore a mask and followed other health guidelines throughout the visit.According to USA Today, Goodwin plans to reopen the monument on Dec. 21. 768

The White House released official portraits of President Donald Trump and Vice President Mike Pence Tuesday morning.According to an official press release from the White House, the portraits were produced by the Government Publishing Office. The photos will be distributed and displayed in the offices of federal agencies across the country.The walls of federal agencies have been a bit bare since Jan. 20, when former President Barack Obama's portrait was taken down in all federal agencies following the inauguration. A September story by the Washington Post reported that the Trump administration was slow to release an official portrait — Obama's portrait was released by March of his first year in office, President Bill Clinton's was released by June.The White House also says the photographs will be made available for sale to the public.  859

The U.S. Geological Survey recorded two earthquakes in Tennessee early Wednesday.The first happened at about 3:15a.m. and was reported to be a magnitude 4.4. The second was recorded at about 3:30a.m. and was a magnitude 3.3.According to the USGS Intensity map, as of 3:45a.m., more than 2000 people reported feeling the earthquakes across Tennessee, North Carolina, Alabama, and Georgia.Some people reported feeling weak shaking in areas of Middle Tennessee, like Hendersonville, Cookeville, and Murfreesboro. According to the National Weather Service office in Morristown, the largest earthquake on record in East Tennessee was a magnitude 4.7 near Marysville in 1973. The USGS?studied the reason why earthquakes are felt at much farther distances on the east coast, compared with earthquakes that hit the west coast. Researchers found that some factors have to do with tectonic plates and their geological history. The east coast has older rocks, which researchers said allow seismic waves "to cross them more effectively during an earthquake." 1084

The United States plans to end enhanced health screening of travelers from certain countries next week, and those visitors will no longer be funneled through 15 large U.S. airports.Those requirements were imposed in January to prevent the spread of COVID-19. The Centers for Disease Control and Prevention said the government will remove those edicts beginning Monday.The CDC said the current screening, which includes temperature checks and questioning travelers about COVID-19 symptoms, “has limited effectiveness” because some infected people have no symptoms or only minor ones. Travelers go through customs only after the health screening.The health agency said that of the 675,000 travelers who went through the process, fewer than 15 were found to have COVID-19 because of the extra screening.The health agency said that instead it will focus on other measures, including a stronger response to reports of illness at airports, collecting passenger-contact electronically to avoid long lines, and “potential testing to reduce the risk of travel-related transmission” of the virus.The extra health screening applies to people who have been in China, Iran, most countries in continental Europe, the United Kingdom, Ireland and Brazil. Most people coming from those countries who aren’t U.S. citizens have been barred entry to the country.The Homeland Security Department did not immediately respond to a request for comment Thursday.A trade group representing the nation’s largest carriers praised the change.“We continue to support spending scarce screening resources where they can best be utilized,” Airlines for America said in a statement Thursday, “and, given the extremely low number of passengers identified by the CDC as potentially having a health issue, agree that it no longer makes sense to continue screening at these airports.”Separately, 18 travel and airline groups asked the administration to start pre-flight virus testing as a way to reopen international travel. The groups argue that more screening could allow countries to lift travel restrictions and quarantines that have shut down most travel between the U.S. and Europe.Airlines including Delta and Southwest have lobbied the Transportation Security Administration to screen passengers for fever before allowing them on flights within the United States. However, the CDC questioned the usefulness of temperature screening because of the large number of infected people who do not have fevers, and no widespread screening of domestic passengers was launched.___This story has been updated to read that screening began at some airports in January, not February.___This story has been corrected to note that the COVID-19 health screening began at some airports in January, not February. 2771