沈阳东城灰指甲需要多少钱(沈阳治疗腋臭手术价格) (今日更新中)

SAN DIEGO (KGTV) -- We’ve known for a while that COVID-19 hits people over 65 especially hard, but a study published Wednesday from researchers in San Diego offers new insight into why that happens.The numbers are staggering: if you’re 65 or older, your risk of winding up in the hospital from COVID-19 is five to 11 times higher than someone under 30. Your risk of death is at least 90 times higher, according to data from the Centers for Disease Control and Prevention.Researchers at the La Jolla Institute for Immunology say the reason why older people fare so much worse appears to be from a lack of T-cells, a type of white blood cell that can decline with age.“Some viruses get controlled by one part of the immune system. Some viruses get controlled by another. In this case it seems that T-cells really do a lot of the work,” said Dr. Shane Crotty, one of the authors of the study published Wednesday in the journal Cell.Dr. Crotty and his colleagues looked at 50 people infected with the virus, and they measured the three elements of the adaptive immune system in detail: antibodies, helper T-cells and killer T-cells.Then they compared the measurements to how people fared against the virus. Some patients in the study group had severe cases, others had mild infections.The researchers found that people with all three branches of the adaptive immune system tended to fully recover. People with severe cases of the virus often lacked one or more of the immune branches, and it was particularly evident in older people.“Our data indicated that of the older individuals, it was particularly the ones that had fewer T-cells to start that look like they really struggled to control this virus,” Dr. Crotty said.As we age, we have fewer T-cells to send after invading pathogens. “That collection of T-cells gets smaller. So it’s harder to recognize a new virus,” Crotty said.Among the 748 deaths in San Diego County reported as of Wednesday, 87% were people aged 60 and older.The findings from LJI may have implications in the search for a vaccine against COVID-19. The data suggests that vaccine-makers may want to target a drug that elicits all three branches of the immune response, Dr. Crotty said. Some vaccine approaches, such as inactivated virus vaccines, only elicit two of three branches, not killer T-cells. However, Crotty said it was too soon to rule any candidates. Two strong branches produced by a vaccine could potentially cover for the lack of a third, he said.Crotty said the findings could help vaccine-makers interpret results from the clinical trials and find the right dosing.“Is a given vaccine a good vaccine, and you just need a booster immunization?” he said. “Does it work well in one population but it doesn’t help in the elderly because it doesn’t generate a T-cell response, for example? Those are the scenarios when this type of knowledge will come into play.” 2906

SAN DIEGO (KGTV) — Two greater one-horned rhino calves took their first steps into their habitat for the first time this week at the San Diego Zoo Safari Park.Next to their mothers Asha and Tanaya, the calves — born on March 25 and April 11, respectively — were finally able to explore their Asian Savanna habitat. Both pairs bonded while traversing the area, before intereacting with some of the other wildlife in the habitat.Tanaya and her female calf, which has not yet been named, enjoyed some wallowing in the mud, taking a cool dip, and meeting some of the blackbuck antelope and other animals in the 40-acre habitat.Asha and her male calf, named Arjun, explored hills and grassy areas. Arjun also met one of the habitat's Javan bantang (before quickly running back to mom's side."It’s great to see Asha and Tanaya introducing their calves to other wildlife for the first time," said Jillian King, senior wildlife care specialist, San Diego Zoo Safari Park. "Everything is new to the calves right now, so it will be interesting to watch them explore. We will keep a watchful eye on them, and look forward to them meeting more of the wildlife on the savanna soon."The greater one-horned rhino is listed as "vulnerable" on the International Union for Conservation of Nature Red List of Threatened Species. This is primarily because of habitat loss, poaching, and illegal rhino horn trafficking.The species, once widespread in Southeast Asia, is now only found in India and Nepal. There are an estimate 3,500 greater one-horned rhino left in the world. 1563

SAN DIEGO (KGTV) - When flames engulfed a Northern California community last month, nurses and doctors found themselves in danger.Video of a medical team evacuating patients from a Kaiser Permanente hospital in Santa Rosa shows the desperate situation.Julayne Smithson was part of the team captured in that viral video.Just moments before, her own home burned down across the street from the hospital. Smithson had recently bought the mobile home and did not have insurance. She’s now living in hotels.A YouCaring page has been established for Smithson. 561

SAN DIEGO (KGTV) — Whether you're in the market for a new home or a place to explore around town, a new Trulia ranking claims to have you covered.The neighborhood analysis covering San Diego County utilizes millions of reviews and polls answered on Trulia Neighborhoods' "What Locals Say" website feature. 313

SAN DIEGO (KGTV) - Want to keep your Easter celebration more natural this year? Fruits, vegetables and herbs are the secrets to beautiful colors for your eggs.Boil your eggs and make dyes early to save time, according to the pros at Whole Foods Market. Natural dyes are still messy, so make sure kids wear older clothing and have paper towels handy.If you use hard-boiled eggs, make sure they don’t stay out of the refrigerator more than two hours.Here’s an all-natural color list: 489

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