梅州皮肤白癜风研究中心(汕尾白癜风需要多少钱) (今日更新中)

To end the pandemic, there need to be enough people immune to COVID-19 and there are two ways to do that: immunity through infection or from a vaccine."I think racing to herd immunity is the dangerous thing that I’m concerned about," said Dr. Stuart Ray, a professor of medicine at Johns Hopkins University School of Medicine.Herd immunity is when the spread of the infection cannot be sustained because the number of people who are immune is high enough. Some countries are considering it as a strategy to combat COVID-19.But Ray said it could not work in the US unless much more effective treatments are developed.He says on average, a newly infected person infects two others, so to have herd immunity from COVID-19 about 60 percent of people would have to become immune."We would have something like another 100 million people, maybe more, infected. 150 million more and even if the major complication rate is a fraction of 1 percent, we will still have huge numbers of deaths," said Ray.He said we also don’t know if just having had the infection once will create lasting immunity to control the spread."It possible that you could be immune enough not to get sick and still not immune enough to prevent that spread and so herd immunity is a tough bar for us to aim for because not only do we need 60 percent of people to be immune but we need them to be immune in a way that prevents them from infecting other people," said Ray.The other way to achieve herd immunity would be through a vaccine."Vaccines can work better, provide better immunity than the natural infection does. The new shingles vaccine provides great immunity and protects more than 95 percent of people from getting shingles," said Ray.Several vaccines are still going through the last phase of clinical trials to see if any also creates enough immunity to prevent passing the virus along.This story was first reported by Abby Isaacs at WMAR in Baltimore, Maryland. 1946

They say music is a universal language, something that can connect us on many different levels. So when it shows up where you least expect it, that makes it even more special.One woman's dream is translating across an entire community in more ways than she could have imagined.Listen closely and you can hear the sweet sound of jazz in one park. There's no band, and you can't see any speakers. But if you happen to stumble upon a small door tucked inside a tree trunk, you'll stumble upon your own personal performance."I was in awe to actually hear music coming out of a tree," says Bruce Bo-Wdry who lives near the park.He still remembers the moment he first heard music flowing from this sound totem, and seeing neighborhood kids share his excitement."They were all over it," Bo-Wdry recalls. "And then they go to the box and then they open up the door, and you can see the gleam on their little faces like awh you know!" Artist Nikki Pike came up with the idea. "I had a dream where there was a miniature opera singer singing in the hollow of the tree," Pike says. "And then I realized that maybe there was an opportunity." A sound totem in Denver, Colorado, was the first realization of that dream. From there she built more, putting the solar and battery powered music boxes in trees across her city, and filling them with music performed by people who live in those neighborhoods. "I sort of built the stage and they are the performers," Pike says. "So it's a real community effort." She doesn't share exactly where the totems are, instead she allows people's curiosity lead them to discovering music, art and community. An idea she believes can spread across the country."The leap in peoples mind to imagine them in their own community is easy," Pike says. "Whereas before when it was an idea and a drawing it was harder to imagine."While the totems add a special spark to the trees and communities they call home, Pike said these small spaces do so much more."I do think this is how you change the world," Pike says. "Just a little sliver of hope a little example of magic or positivity."A sweet surprise to brighten your day, and connect a community. 2194

This is my home, this is my city.. I’m blessed to be able to be a part of the Milwaukee Bucks for the next 5 years. Let’s make these years count. The show goes on, let’s get it. ?????? pic.twitter.com/895tCBE9RK— Giannis Ugo Antetokounmpo (@Giannis_An34) December 15, 2020 286

There is something unique about places like Montana. There is an uncertainty to what you could find in “Big Sky Country.”That is a quality that has always driven Joseph Haas’ guide and outfitting business, A Lazy H Outfitters. But this year has brought a kind of uncertainty, unique to anything he’s faced before."By February, it just cratered to almost zero at all in terms of requests for even any information at all," Haas said. “It was, it was scary.”This time of year, people travel from all over to have Haas lead them on multi-day horseback tours through the Montana wilderness, usually."We have very few customers from the east or west coast, California in particular, we are seeing almost nothing from California," Haas said.Haas' business is located in Choteau, Montana, a town with a population of about 1,700 people. Summer is usually the busy season in the community, which located along the shortest route between Glacier National Park and Yellowstone National Park.“I would think that we’ve probably had at least 95% of the events we had booked canceled and reservation-wise," said Barb Bouma, who owns the Stage Stop Inn in Choteau.The American Hotel and Lodging Association says hotel occupancy levels might not recover until 2022 nationwide. Bouma doesn’t know if her hotel will make it that far.“It’s not sustaining itself. How long we can go, yeah I’m not sure," Bouma said.Like many business owners in the pandemic, Haas has had to cut back."Right now, I have one person. Normally, I would have two or three in the summer," Haas said about the number of employees he has getting gear ready for his trips.He says reservations for his business have started to pick up again. He also says reservations for hunting trips he offers are booked years in advance and have held steady.As Haas starts to lead people back into the wild to show off the rugged uncertainty of “Big Sky County,” he hopes the struggles he’s faced this year stay unique to 2020.“There’s so much more known about the coronavirus now," Haas said. "If they can travel, the known will outweigh the risk for people.” 2107

THOUSAND OAKS, Calif. (KGTV) — National Park Service biologists say they're seeing a boom in mountain lion births this summer in the Santa Monica Mountains and Simi Hills areas.Between May and August, researchers have seen 13 total kittens born to five mountain lion mothers. This is the first time this many mountain lion dens have been found in such a short time period during the 18-year study, according to the National Park Service. A total of 21 litters of kittens have been marked at the den site. Previously, the most dens found in one year for the study was four in 2015."This level of reproduction is a great thing to see, especially since half of our mountains burned almost two years ago during the Woolsey Fire," said Jeff Sikich, a wildlife biologist who has been studying the mountain lion population at Santa Monica Mountains National Recreation Area. "It will be interesting to see how these kittens use the landscape in the coming years and navigate the many challenges, both natural and human-caused, they will face as they grow older and disperse."Since 2002, NPS has been studying mountain lions around the Santa Monica Mountains to determine how they survive in a fragmented and urbanized environment.To track the mountain lions, researchers wait until the mother leaves to hunt or feed. While researchers are tracking her movements, other researchers will approach the den to catalog the kittens and place a unique tag on the ear of each animal. These tags help researchers identify them in the future. 1533

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