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With news of two highly effective COVID-19 vaccines on the horizon, health officials and scientists are giving us new insight into how we could gain herd immunity."If we think of the population as a single group of people with all similar risks and susceptibilities and behaviors, we need 60% of people to be immune, meaning that not only they don’t get sick, but also they don't pass on the virus to other people," says Dr. Stuart Ray, an infectious disease professor and herd immunity expert at Johns Hopkins University.Dr. Ray says achieving herd immunity with the help of a COVID-19 vaccine would mean enough people would either get the vaccine or already have recovered from the virus and be immune to help stop the spread of the virus."It's a little bit like this notion that if you’re going to pass on a message from a lot of people in a group, they have to speak the same language. And the more people don't speak the language, the harder it's going to be to pass that message and there’s a threshold at which the message just gets stopped," says Dr. Ray.Still, it would take a certain number of people to get the vaccine and have that immunity last in order to reach herd immunity. Stanford University's Dr. Bali Pulendran hopes that we can achieve herd immunity, even though there are a certain number of people who are still hesitant to take the vaccine."I think we should remember that a vaccine that is 95% effective is only effective if the majority of people in a population take it. If only half the population or only 60% of the population take it, then we are unlikely to have achieved the level of herd immunity that you need for curbing the disease," says Dr. Pulendran.And if the new COVID-19 vaccine requires two doses, how crucial will it be to make sure people receive that second round of immunization?Asked whether follow up will be a concern, Dr. Ray says, "I think it is a possible concern. We’re going to do a lot of learning. So, one of the things we’ve learned is that some vaccines we thought you needed multiple doses, one dose works pretty well."Doctors say research will be ongoing on the vaccine and the virus itself to ensure people will be protected as much as possible, because so many are hopeful for an end to COVID-19. 2268

With hospitals overwhelmed in much of the United States, the number of coronavirus cases jumped to record levels on Wednesday. The total of confirmed COVID-19 cases reported on Wednesday was 144,000, according to Johns Hopkins University.There were also at least 1,900 coronavirus-related deaths reported in the US in the last 24 hours, according to Johns Hopkins, marking the deadliest day of the pandemic since May 6, when 2,300 Americans died of the virus.Wednesday's case increase was the highest single-day total since the pandemic began and broke a record that stood for one day. The previous record of 140,000 new cases was set on Tuesday. Wednesday marked the ninth consecutive day in which there were at least 100,000 new cases reported.The news comes as governors and public health experts throughout the country have pleaded with citizens to wear masks and follow social distancing recommendations. A number of states were looking to re-impose restrictions in hopes of keeping hospitals from filling up with COVID-19 patients.Ohio Gov. Mike DeWine threatened to close restaurants, bars and gyms in his state again if things don’t change. The state had more than 6,000 coronavirus cases on Tuesday, marking a one-day record.“I am very well aware of the burden this will place on employees and the owners, but these are places where it is difficult or impossible to maintain mask-wearing, which we know now is the chief way of slowing this virus,” he said.In neighboring Indiana, the state is limiting the size of social gatherings, depending on the county.“Unfortunately, too many of us have let our guards down,” Gov. Eric Holcomb said Wednesday.Across the country in Nevada, the state’s governor issued a similar warning."We don't have much time to act to avoid a dangerous hospital surge and keep our economy going and keep people at work," said Gov. Steve Sisolak.The COVID Tracking Project, a project led by The Atlantic, shows that current coronavirus-related hospitalizations hurdled the 60,000 mark in the US on Tuesday for the first time since the start of the pandemic. The number of people hospitalized with COVID-19 has more than doubled in the last six weeks throughout the US.While state governors have been doing what they can to fight the virus, the White House has been silent on the virus since Election Day.The US is not alone in seeing a surge in cases. There has also been a significant surge of cases in much of Europe after going most of the summer and fall with a minimal number of cases. 2531

White House chief of staff Mark Meadows told reporters Wednesday that President Donald Trump wants to continue working from the Oval Office despite being infected with COVID-19.According to CNN and CBS, Meadows told reporters that the White House would be taking extra precautions to allow Trump to do so. According to CBS reporter Ben Tracy, any White House staff coming in contact with the president will wear gowns, gloves, masks and eye protection.It's unclear if Trump would also wear personal protective equipment (PPE) while working in the Oval Office.Following Meadows' statement to reporters, Larry Kudlow, the Director of the United States National Economic Council, said during an appearance on CNBC that Trump visited the West Wing with those added precautions on Tuesday.Medical experts say that while PPE greatly reduces the spread of COVID-19, it cannot prevent the spread of the virus entirely. The CDC recommends that anyone who comes within six feet of a person who may have COVID-19 should quarantine for 14 days, excluding those who have had the virus within the last three months.During a press conference on Monday, White House physician Dr. Sean Conley did not specify if Trump would be asked to quarantine in the White House residence while he was infected with COVID-19.This story is breaking and will be updated. 1346

White House chief of staff John Kelly personally denied calling President Donald Trump an "idiot" in an afternoon conversation with the commander in chief, relaying nearly the same statement in his face-to-face talk with the President as the one he released publicly, according to an administration official.An NBC report published Monday claimed, among other things, that Kelly had said during an immigration-related meeting that he needed to "save (Trump) from himself" while insulting the President's intelligence by calling him an "idiot.""I spend more time with the President than anyone else and we have an incredibly candid and strong relationship. He always knows where I stand and he and I both know this story is total BS," Kelly said in a statement. "I am committed to the President, his agenda, and our country. This is another pathetic attempt to smear people close to President Trump and distract from the administration's many successes."The situation is similar to when reports surfaced that then-Secretary of State Rex Tillerson called Trump a "moron."But the White House official pointed out a big difference between the Kelly incident and Tillerson -- Kelly immediately denied the report and denounced it to the President's face. Tillerson declined to do so, simply saying he wouldn't play that Washington game. 1348

When it comes to Christmas decorations, country music star Tim McGraw lives by the expression "go big or go home."On social media, McGraw showed off his impressively tall Christmas tree.In the pictures, McGraw is seen going to great lengths to decorate the tree - using a very tall ladder, using a long pole to move branches, and adjusting the tinsel with one leg in the air.He cheekily captioned the photos with "A: Santa's lead flying reindeer B: wife trying to get rid of me before Christmas." 504