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SAN DIEGO (KGTV) - The Language Academy teacher Georgette Carillo is the SDCCU Classroom Hero for the month of October.SDCCU is proudly honoring local teachers through SDCCU Classroom Heroes, launched in partnership with iHeartMedia, Inc. San Diego.Teachers, students, parents and the community are encouraged to nominate a deserving teacher by visiting sdccu.com/classroomheroes . 389

SAN DIEGO (KGTV) - The family of a man who was hit and killed by an Amtrak train Tuesday night is grieving and hoping he doesn't die in vain.Wentian He, 79, was walking across the train tracks toward the bus stop when he was hit and killed by an Amtrak train, according to his daughter Lilian Zheng. Zheng said her parents were on their way home from shopping.Wednesday, her mother was sobbing, saying she didn't want to live by herself.Zheng said her parents were married 54 years and she saw her dad as a healthy man, young and strong."He really enjoy[ed] learning the streets, the culture, how to behave in this foreign country. He worked really really hard," she said he was part of the Communist Army in China and it took him a while to get 'un-brainwashed'.Her parents emigrated to the U.S. in 2007 and she says they've been enjoying retirement, "They always together go out, they like to go to the senior center, because they can meet new people, they go to the flea market, or small shops so they can find unique stuff."Those trips, now cherished memories.Zheng hopes change can be made at the Washington Street station to protect people like her father. "The two tracks are so close they can cross, there is no [barrier] when Amtrak came, there should be a second gate," suggesting another barrier between the two sets of tracks."I feel life is so fragile, you know he's such a strong father and we've been depending on him," Zheng said tearfully, now they're leaning on each other.Zheng has a sister and niece in China. She hopes to bring her sister to the U.S., so they may fulfill her father's wish to show her the U.S., and bring his remains home to China. 1677

SAN DIEGO (KGTV) -- The big concern for many health care workers during the coronavirus pandemic is their protective gear. “It's a scary time with not knowing exactly what's coming at us,” said Jay O’Brien, a local nurse and a representative for the Sharp nurses’ union.“A lot of nurses are very concerned that we don't have the proper equipment. The biggest concern is the lack of N95 masks,” O’Brien said. The masks block at least 95 percent of airborne particles, but there is now a shortage due to the pandemic.Nurses at UC San Diego said they had been wearing N95 masks when interacting with a suspected COVID-19 patient, but the Centers for Disease Control has loosened their guidelines. Now, they are used only during more complicated procedures, such as intubations.UCSD nurse Tiffani Zalinski wrote over the weekend on Facebook that the N95 respirators were "confiscated by the administration and were being distributed on a case-by-case basis." She was upset over the change, saying she works with patients "fresh out of surgery" and the N95 respirator were “the only thing that is going to protect" her. Zalinski adds she "will not willingly be exposed to this disease and inadvertently spread it to others if I have choices and means to protect myself and you."A UCSD spokesperson told Team 10 the new guidelines still represent the "appropriate standards of care."O'Brien said he understands the CDC change. “If we burn through all the N95s now, if things get really bad as this crisis continues, then we're going to run out and have nothing at all,” O’Brien said.“I have no reason to think it's going to get better very soon, hopefully the precautions that we're taking are going to slow things down so that we can safely take care of people,” he added. 1775

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 man police say hit and killed a pedestrian on a South Bay road in late July has been arrested.According to police, Carlos Franco, 20, turned himself in to investigators Tuesday and was booked into jail for vehicular manslaughter.San Diego Police on July 30 received a report of a crash on Del Sol Boulevard and Dennery Road at 7:03 a.m.RELATED: Pedestrian hit, killed on south San Diego street  Police say Franco struck a 66-year-old man, who was crossing the street at the time of the crash. The man, who hasn’t been identified by police, was pronounced dead at the scene.Following the crash, Franco stayed on scene. Police say drugs or alcohol weren’t factors in the crash. 712