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While thousands gathered in Bridgestone Arena in Nashville, Grammy Award winner, Sturgill Simpson played his own street-side concert.Simpson won a Grammy for Best Country Album earlier this year, but has never been nominated for a CMA Award. He's made jabs at the Country Music Association in the past.He played for a small crowd at the entrance of the arena and streamed it live to his Facebook page.Sturgill answered questions from viewers and played a few songs. He said he was only recognized once while wading through the crowds of downtown Nashville. 584

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

When snow falls in a flurry and the weather is cold outside, escaping the elements becomes a top priority.With COVID-19 causing some warming shelters to stop operations this winter, however, the impacts could literally mean the difference between life and death.“We’re going to see a lot of people die to be perfectly honest,” said Robin Wood-Mason with The Delores Project, a homeless shelter in Denver, Colorado, that focuses on women and transgender folks.He says during a normal winter, this shelter can provide a warming space for dozens of people each day. But with a static population and a lack of social distancing, local health guidelines have forced them to shut their doors for warming shelters this season.“It’s heartbreaking,” Wood-Mason said of the warming shelter not being able to open this winter. “Here in Denver, we’ve got thousands more people experiencing than there are shelter beds available.”Across the country, other warming shelters are also being impacted by COVID concerns.“We’re just starting to inch into those winter months when we know things are going to get colder, things are going to look and feel a little different into our regions,” said Andrea Carlson with the American Red Cross.She says the days of having people packed in to one large room to get warm are gone. Now, they’re putting people into multiple separate spaces and following new COVID safety protocols.“Distanced between each other, masks are required, you do have some health checks when you come into the warming center,” Carlson said.As winter weather rolls in, and limited capacity issues mean more people are staying outside, The Delores Project believes more people will be exposed to harsh weather and the virus.“It means that we’re really going to see people get sick,” Wood-Mason said. “It’s going to put a new burden on the hospital system and our first responders.” 1887

With California hospitals dealing with an extreme number of patients, nurses are terrified of what’s next.It comes as California hits 2 million infections just 44 days after reaching 1 million. Hospitals in California have been pushed to the brink, and it’s expected to get worse as people travel and gather for Christmas and New Year’s.The state is urgently searching for 3,000 temporary medical workers to meet the demand, focusing on nurses trained in critical care. Hospitals are also confronting the shortage by trying to free up staff any way they can, including postponing certain medical procedures.The state has also temporarily loosened some restrictions. Typically, California requires one nurse for every two ICU patients. Regulators have temporarily relaxed that requirement to one nurse for every three ICU patients.The state has sent more than 600 temporary healthcare workers to hard-hit counties from the National Guard, the California Health Corps, and other partnerships, but officials are still looking for more.State officials have even started reaching out to other countries like Australia and Taiwan to get much-needed medical workers.Elected leaders and health officials across the U.S. are asking people to stay home for the holidays while also trying to show the public that the COVID-19 vaccines trickling out to health care workers and nursing home residents are safe.The Associated Press contributed to this report. 1453

We've all heard exercise helps you live longer. But a new study goes one step further, finding that a sedentary lifestyle is worse for your health than smoking, diabetes and heart disease.Dr. Wael Jaber, a cardiologist at the Cleveland Clinic and senior author of the study, called the results "extremely surprising.""Being unfit on a treadmill or in an exercise stress test has a worse prognosis, as far as death, than being hypertensive, being diabetic or being a current smoker," Jaber told CNN. "We've never seen something as pronounced as this and as objective as this."Jaber said researchers must now convey the risks to the general population that "being unfit should be considered as strong of a risk factor as hypertension, diabetes and smoking -- if not stronger than all of them." 799