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SAN DIEGO (KGTV) — In their push to reopen schools, some political supporters of President Donald Trump have cited COVID-19 research from a group of San Diego scientists, claiming it’s evidence we could be close to herd immunity from the virus.But one of the authors of that research says that conclusion is way off.One of the most prominent supporters of the herd immunity conjecture is Dr. Scott Atlas, a neuroradiologist and senior fellow at Stanford University’s Hoover Institution who became an adviser to President Trump this month.“There’s a pretty good chance that herd immunity requires way less infections because of existing immunity out there,” Atlas said in a livestream conversation with San Diego County Supervisor Jim Desmond. “It actually may have already been reached in places like New York. We don’t know, but it’s possible.”Herd immunity is the level of protection needed to effectively stop the virus from circulating, thought to be about 70 percent of the population. The “existing immunity” to which Atlas is referring has to do with T cells.“It's just a misunderstanding of the science,” said Dr. Shane Crotty, a virologist at the La Jolla Institute for Immunology who co-authored the groundbreaking research on T cells in June.Crotty and his colleagues found that 50 percent of people unexposed to the novel coronavirus had T cells that could recognize it. Scientists refer to this as cross-reactive T cells, and the study was replicated in other countries.Proponents of the herd immunity theory take the number of people infected with the coronavirus, add the number of people with T cells that can recognize the virus, and come up with a number around the herd immunity threshold of 70 percent. But the math doesn’t work that way, according to Crotty, in part because T cells only kick in once a virus has hijacked cells, meaning T cells alone can't stop a pathogen in its tracks.“We’re not saying those 50 percent of people have protection like they’ve already had the virus,” Crotty said. “We’re saying those 50 percent of people have a head start in responding to the virus, which is a good thing but doesn’t affect herd immunity.”Since the novel coronavirus is a new pathogen, scientists did not expect people would have tools in their immune system capable of recognizing it. Unexposed people do not have cross-reactive antibodies, Crotty said.But in a study published this month in Science, Dr. Crotty and his colleagues offered a potential explanation for the surprising T cell results: they found these cross-reactive T cells also recognized four other coronavirus strains that cause common colds.Their theory: the T cells were created in response to other coronaviruses but can recognize SARS-CoV-2 like a distant relative.“It's a memory of a cousin,” Dr. Crotty said.That memory may speed up the body’s immune response, which can normally take about a week for an unknown pathogen, Crotty said. But scientists aren’t sure yet what role T cells actually play in clinical outcomes.“We have no data and and neither does anybody else as to whether these T cells really help or not,” Crotty said.To answer that question, scientists would need blood samples for lots of healthy people and then they would have to closely study individuals who got infected.The La Jolla Institute for Immunology is raising money for that kind of research, Crotty said, but they’re not there yet. 3417

SAN DIEGO (KGTV) -- In three weeks San Diego County will elect its next district attorney,  and in a recent poll a large number of voters indicated that they're still undecided. The results of our scientific 10News Union-Tribune poll shows the battle between Summer Stephan and challenger Genevieve Jones-Wright is wide open. If the election were held today, Summer Stephan would get 35 percent of the vote. Genevieve Jones-Wright would get 22 percent and 43 percent of those polled said they are undecided. "Those polls are consistent with what our campaign research shows," Jones-Wright told 10News. "We knew we were up against a political machine and it really is no surprise to me that she's up on the polls."Progressive candidate Jones-Wright says Stephan got a head start, by being appointed to the district attorney job when Bonnie Dumanis left. Jones-Wright said she thinks the poll shows her campaign is gaining steam.Stephan was encouraged by the poll numbers. "This is very encouraging, what you're telling me, because it shows that what we're doing is working," she told 10News. "That San Diegans are enjoying that we're one of the safest urban regions in the country and that they really prefer experience over an experiment."The poll shows that Stephan's voter base is republican, white and over the age of 35. It shows that Wright's voter base is younger, more racially mixed and primarily democratic. On Monday, Summer Stephan pulled out of a community forum, one which both she and Genevieve Jones-Wright accepted to face off. 1581

SAN DIEGO (KGTV) - It is officially Wildfire Preparedness Week in California and federal, state, and local agencies are working together to ensure a safe wildfire season.California’s wet winter created overgrown vegetation across the state, including in San Diego, and once that starts drying up and dying, things could get dangerous.The message is clear: California wildfires have changed and the public needs to adapt.“Our firefighters have been preparing non-stop for the inevitable fires that will happen this year. However, preparation involved all levels of the community, from first responders to the general public,” said Chief Thom Porter, Cal Fire Director.RELATED: Team 10: A closer look at San Diego brush clearance citationsPorter said the public must prepare. Homeowners should create defensible space around their property and families should always have go bags and an evacuation plan prepared.Cal Fire’s Ready for Wildfire app is free to download and offers preparation tools year-round. Homeowners can find checklists on the app and create evacuation plans as well. San Diego County is also preparing. At a news conference Friday, Supervisor Dianne Jacob said the county is taking extra steps to protect homes here locally.“Working with Cal Fire, the county is preparing to launch a grant program to encourage existing homeowners in high risk areas to install safer walls, vents, and other fire resistant materials to their homes,” said Jacob.RELATED: It's wildfire season! Here's how to prepare for the worst2018's West Fire in San Diego County destroyed many homes and displaced families. Other fires in California killed dozens of people and leveled entire neighborhoods.“The last couple of years have been really challenging and last year in particular way too many people being killed by wildfire and injured,” said Porter. “We need to be ready, we need to be set, and we need to go."Wildfire Preparedness Week gives California residents a chance to reduce the number of wildfires by increasing public preparedness and safety through education. 2075

SAN DIEGO (KGTV) — In a departure from recent years, Warner Bros. will be a no-show at San Diego Comic-Con's revered Hall H this year.A WB spokesperson confirmed to 10News that the studio and DC Comics will forgo any Hall H panel. In recent years, Warner Bros. has been pivitol for Hall H panels, especially in 2018 when Marvel and HBO elected not to take the stage.The decision was made all the more surprising — for fans, disappointing — considering the studio's upcoming slate of comic book movies, including "Joker" (Oct. 4, 2019), "Birds of Prey and the Fantabulous Emancipation of One Harley Quinn" (Feb. 7, 2020), "Wonder Woman 1984" (June 5, 2020), and "The Batman" (June 25, 2021).MORE COMIC-CON 2019 NEWSLast year, the studio used Hall H to preview "Wonder Woman 1984," "Aquaman," "Shazam!," "Fantastic Beasts: The Crimes of Grindelwald," "Godzilla: King of the Monsters," and "The Lego Movie 2: The Second Part.""Wonder Woman" director Patty Jenkins confirmed the news on Twitter this week, saying, "By now you’ve heard: WB isn’t going to Hall H this year. We’re so sad to miss you there! And waiting until Dec. to start our official #WW84 campaign in full-- But the truth is… we can just… barely… wait…" 1224

SAN DIEGO (KGTV) -- Inclement weather beginning Monday and lasting through Thursday will bring cooler temperatures and rain to San Diego County amid a busy travel season. The first of a series of storms is set to arrive Monday, bringing rain and snow to the county. A second storm is due to bring another round of moisture Christmas night through Thursday. Between the two storm systems, light showers will occur, according to the National Weather Service. The first round of storms are forecast to dump as much as an inch of rain along the coast and in the mountains. RELATED: Check your San Diego County Forecast | Holiday traffic mapSnow levels will be between 5,500 and 6,000 feet through Monday, falling to near 5,000 feet early Tuesday. Snow accumulations between one and three inches are expected for elevations between 5,000 and 6,000 feet. Another storm arriving Christmas night and lasting through Thursday shows similar precipitation amounts, according to model data. The agency says the second storm is colder, which means it could have a greater impact in the mountains, including through the Cajon pass and I-8 across the San Diego County mountains. 1172