濮阳东方医院男科治疗早泄收费比较低(濮阳东方医院妇科评价比较好) (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 mother of a Southern California girl diagnosed with rat-bite fever is sharing her story at a San Diego hospital Friday to educate other parents about the danger. Rat-bite fever is a potentially deadly infection spread through contact with domestic rats. 8-year-old Cali from Menifee contracted the disease when the rat’s saliva came into contact with an open wound, according to Rady Children’s Hospital officials. Cali has eczema on her fingers which may have contributed to the situation, a doctor said.Rat-bite fever is a bacterial disease which can cause a rash, fever, and body aches.The illness started Friday night, said Cali's mother Sabrina. By Sunday, Cali had a fever of 104.6 degrees. She lost the ability to use her hands and arms and had a whole-body rash."Really, really scary. Really hard to watch," said Sabrina.Cali's family bought two rats, Shell and Onyx, from a feed store about two years ago with no warning about the potential of rat-bite fever.Doctors recommended the family get rid of their rats."We didn't want to do it," said Sabrina. “It’s not a fun thing to tell your kid you’ve got to get rid of your best friend."Cali's mother had a recommendation for other parents."Just know that this can happen," she said. "Wash your hands."Watch the news conference at Rady Children's Hospital: 1344

SAN DIEGO (KGTV) - The City of San Diego is rolling out the second phase of the polystyrene foam and single-use plastics ordinance as the Memorial Day weekend kicks off. Starting May 24, a ban on the sale and distribution of egg cartons, food service ware and food trays made from polystyrene foam begins. The ban includes bowls, plates, trays, cups, lids and other similar items designed for single-use. According to the city, polystyrene foam doesn’t biodegrade and can be mistaken for food by marine life and other animals. Acceptable alternatives include recyclable plastic, aluminum and recyclable paper products, the city says. Some businesses that make less than 0,000 are exempt until 2020. “The City’s goal is to achieve zero waste by 2040,” said the City’s Environmental Services Department Director, Mario X. Sierra. “This ordinance not only helps in achieving that goal, but also improves water quality, reduces pollution and keeps our environment healthy.” 980

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 Navy confirmed Thursday that the suspected Golden State Killer attended and graduated basic training at the Naval Training Center in San Diego.Officials say Joseph DeAngelo, 72, graduated from the training center after attending from October to December of 1964.DeAngelo also served aboard the Boston-class guided-missile cruiser USS Canberra (pictured below) during the Vietnam War.The Naval Training Center closed in 1997 and is now known as Liberty Station. The San Diego's District Attorney is also reexamining cold cases in San Diego that may have links to DeAngelo. TIMELINE: Major events in Golden State killer caseNew information Thursday also helps paint the picture of how authorities were able to catch the man accused of killing at least 12 people and raping at least 45 women.Prosecutors say authorities used genealogical sites to find a DNA match for DeAngelo, according to the Associated Press.Investigators compared the DNA collected from a crime scene of the Golden State killer to online genetic profiles and found a match: A relative of DeAngelo. Investigators didn't go into further detail such as which company they went through. DeAngelo is accused of committing the murders, rapes and more than 120 burglaries in the decade spanning between 1976 and 1986.RELATED: Suspect identified, arrested in East Area Rapist/Golden State Killer caseMost of the crimes happened near Sacramento and in the Bay Area.The Associated Press contributed to this report. 1544

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