不要孩子去和田哪个医院好(和田大的妇科医院) (今日更新中)

SAN DIEGO (KGTV) — The back-to-back announcements of promising clinical trial results from Pfizer and Moderna may usher in a new era for vaccine technology.Both companies have candidates that rely on a new kind of vaccine strategy: RNA. Preliminary data show both candidates are more than 90 percent effective.On the surface, the vaccine candidates look like any other you’ve taken. They work by training your body to build up defensive weapons against a virus, like antibodies and T-cells.But instead of training your body by introducing a killed virus or a fragment of a virus, the vaccines from Moderna and Pfizer introduce a set of instructions called messenger RNA enclosed in a little blob of fat.“The key concept of RNA is that they’re messages, and they’re meant as short-term messages,” said Dr. Shane Crotty of the La Jolla Institute for Immunology.Crotty said there are 5,000 to 10,000 messages within a cell at any given time.Once administered, the mRNA in the vaccine instructs some of your cells to make the coronavirus’ signature spike protein. The spike protein on the surface of the coronavirus allows it to infiltrate and hijack cells.Even though the spike protein is just one of about 25 genes the virus has, preliminary results from the clinical trials suggest it is enough material to train the immune system without making the recipient sick.Crotty likened the process of training the immune system to spotting a sedan. If the coronavirus is a car, the spike protein might be the door.“There's no way that car door could turn into a whole car, but it's enough of a piece of a car for your immune system to recognize that car if it saw it again,” he said.Scientists started by sequencing the virus’ DNA from a sick patient, then encoding that genetic sequence into an mRNA instruction molecule that can be read by the manufacturing part of cells.From there, Dr. Crotty said it’s a bit like the messenger app Snapchat.The mRNA gets injected into the body, sending temporary instructions to your cells that last for a while, then disappear. mRNA does not genetically modify cells, he stressed.“They’re around as messages for some period of time and then they go away, and the cells get back to their normal job of reading their own messages instead of reading the messages you’re injecting in the vaccine,” he said.The concept has been around since the 1990s, but there are currently no RNA vaccines on the market for any pathogen, so Dr. Crotty said it’s hard to estimate how long their protective effects will last.Some vaccines offer a lifetime of protection, like the measles vaccine. Others offer decades of protection. The flu vaccine only lasts about six months.Dr. Crotty said the length of protection depends on how fast the virus mutates and how long the immune cells survive in the body.But even if the COVID-19 vaccine turns out to need an annual update, he’s optimistic. The best feature of RNA vaccines is that they can be quickly reprogrammed.Both Moderna and Pfizer are still in their Phase 3 trials, but they expect to finish them by December. Together, they estimate they’ll have enough doses for about 35 million people by the end of this year, primarily for healthcare workers and high-risk individuals. 3250

SAN DIEGO (KGTV) -- The city of San Diego has turned to two community leaders to assist with gang prevention and improve communication between police and the community.Mayor Kevin Faulconer on Tuesday announced the hiring of Rev. Gerald Brown to oversee police-community relations, and Pastor Jesus Sandoval to lead its commission on gang prevention."At age 16 I had been shot and stabbed, didn't think I would make it to 18," said Sandoval, once in a gang himself. "Since then I've been dedicating my life to helping other people."Brown will take over the Citizens Advisory Board on Police-Community relations, which meets monthly at various locations in the city. He said he is already working on arranging for clergy to spend 10 hours a month with police.Brown also wants to make himself accessible to the community and says he will bring concerns directly to the chief of police. "Really focus on how do we bring communities together? How do we bridge that gap, especially when working with African American community and law enforcement, find ways we can seek peace," he said. But some say the city needs to do more. Kate Yavenditti is a member of Women Occupy San Diego, which is seeking more police oversight. She said she has been attending the police-community relations meetings for about two years and hasn't seen many results.She said she would like the groups to be more than just advisory."So they can send recommendations up to the mayor and the mayor doesn't have to make any changes, and that's pretty much what's been happening," she said.The police-community relations board next meets 6 p.m. Monday at the Taylor Branch Library in Pacific Beach.    1706

SAN DIEGO (KGTV) -- The all-clear was given after a suspicious device forced the evacuation of a building at San Diego City College Monday. The device was reported Monday afternoon in or near Building A, according to the school. The building serves as administrative offices. The college says no classes were affected by the evacuation. The building, as well as a cafeteria will remain closed for the remainder of the day. 431

SAN DIEGO (KGTV) - The Coronavirus Pandemic has had an unexpectedly positive effect on the Helen Woodward Animal Center, as pet adoptions have doubled over the past week."This is a fabulous time to bring animals into your home," says Jessica Gercke, the spokesperson for the HWAC.Gercke says the Center has seen a surge in people applying for adoption and fostering because they're working from home, and have more time to integrate a new pet into the family."We're seeing a lot of teachers and graduate students," says Gercke, noting that many had planned to wait until summer break, but moved up their adoptions because of the extra time at home.That's what led Anna Fairman, a Carlsbad Kindergarten teacher, to adopt last Thursday. She took home a new dog, Archie."I had had this plan that I was gonna adopt a dog at the beginning of this summer so that I could obviously have time to spend with the dog and train it," she says. "Now, just seemed like the perfect time."The HWAC is doing its part to keep the adoptions as safe as possible. They're only letting one person in at a time, with appointments set up in advance. Each person is allowed to interact with up to three animals to decide which one to take home.For fostering, the HWAC is doing video chat calls to inspect the homes of people wishing to foster and make sure they're safe and appropriate for the pets. They're also doing online training for potential foster families."We're seeing this beautiful, beautiful love that animals give to us," says Gercke. "It lowers blood pressure. It keeps our spirits lifted. They provide us unconditional love and comfort and calm in really scary times."To begin the adoption or fostering process, go to animalcenter.org. 1734

SAN DIEGO (KGTV) -- The City of San Diego declared Thursday, August 6, as "Officer Jonathan Wiese Day."Wiese was the San Diego police officer who saved two-year-old twin girls after their father drove off Sunset Cliffs in June. The officer also saved the girls' father from the water.On Thursday, a proclamation was read and presented during a virtual Rancho Bernardo Community Council meeting.Wiese said he didn't rescue the girls for recognition, but said it was nice to see community support.The rescue happened early in the morning on June 13. Wiese, a K-9 officer, rappelled off a cliff using his 100-foot long dog leash to help.Wiese told 10News he is actually scared of heights and was thankful that it was dark the morning of the rescue.He joked that his wife told him he wouldn't have to wash the dishes on his day and that he hoped he'd get a free cup of coffee.Wiese was also the officer that helped take the suspected Poway Synagogue shooter into custody in April 2019. 989

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