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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) -- Many kids are starting the school year with a device at home as schools across the state go back in session.Meanwhile, some of their teachers are back in the classroom alone, running classes virtually to help keep some of the normalcy intact."I come to school for the kids," said Tanya Morrison, a geography teacher at West Hills High School in Grossmont Union High School District.Last school year, she taught six classes and saw around 190 teenagers every day."Now, I am waiting for my students to log in," Morrison said.Instead of walking up and down rows of desks, she teaches her twice a week virtual lessons through the computer. Her computer sits at eye-level thanks to a stack of textbooks.Morrison's got two screens, so she can see the teens and the lesson."They should already be working," she said. "They get their assignment at 8 in the morning on our Schoology platform, and they just log-in, and it's kind of self-directed work, and then we move into twice a week Zoom meetings," she said.Preparation for the lesson began days earlier.Instead of a free form approach, Morrison makes a slide presentation to keep the students engaged."I’ll use an app today called Pear Deck, and what it does is it makes Google Slide presentations interactive," she said. "So each slide they have a chance on their end to write a response and it kind of forces engagement and gives them something to do while I'm talking."But even with all the planning, there's still challenges."In the classrooms, I can see that kids are disengaged," she said. "With this, I'm trying to figure out are you really disengaged or do you have a lot of kids in your house, and it's just easy to get distracted."Morrison's been teaching for 16 years.Instead of teaching from home she chose an empty classroom and campus to make sure she's focused on the students as this year's needs are so different. Not everything happens in a Zoom session."Just those normal conversations that might happen in five seconds in the room is like 45 minutes of buildup and email conversations, can I call you now, are you going to answer and those little things," she said.With more than half of the counties in California on the state’s monitoring list, most learning, for now, is at a distance.Morrison doesn't make the rules on how or when kids will be back, but she tries to control what she can."It gives me that passion to keep going and just to see that I do this for the kids," she said. 2481

SAN DIEGO (KGTV) - If San Diego County has a case rate higher than 7.0 next week, it could be moved into the state’s purple tier which is the most restrictive tier for area businesses.Wednesday, county health officials said San Diego County was at a 4.5% testing positivity rate and 7.9 cases per 100,000 people. The current case rate it over the state's threshold of 7.0 cases per 100,000 residents reserved for the purple tier, the state's most restrictive.According to a breakdown from the California Department of Public Health, retail stores will have to lower to 25% capacity indoors, from 50% capacity.Restaurants must move to outdoor dining only, after operating at 25% capacity indoors or 100 people, whichever is fewer.Shopping centers will move to 25% capacity with closed common areas and a closed food court. They're currently operating at 50% capacity with closed common areas and a limited food court.Personal care businesses must move to outdoor operations after working indoors with modifications.Museums, zoos and aquariums will go to outdoors only after operating at 25% capacity indoors.RELATED: San Diego County wants SDSU's coronavirus cases nixed from case ratePlaces of worship and movie theaters will be held outdoors only, after operating at 25% capacity or 100 people.Gyms and fitness centers will also have to go outdoors only, after being open at 10% capacity indoors.Professional sports will remain the same and continue to operate but without live fans in stadiums.While the county's testing positivity has sat in the third tier (orange) for two weeks now, a county must meet both metrics for two weeks to move forward with less business restrictions."At a minimum, counties must remain in a tier for at least 3 weeks before moving forward ... To move forward, a county must meet the next tier’s criteria for two consecutive weeks. If a county’s metrics worsen for two consecutive weeks, it will be assigned a more restrictive tier," the state's website says. 1998

SAN DIEGO (KGTV) - Law enforcement agencies across San Diego County must comply with a new law designed to increase transparency of police misconduct.Senate Bill 1421 requires departments to release records of officer-involved shootings and major uses of force, officer dishonesty and confirmed cases of sexual assault to the public.Earlier this year several police associations in San Diego County sued to block the release of records, arguing Senate Bill 1421 doesn’t contain any express provision or language requiring retro-activity or any clear indication that the legislature intended the statue to operate retroactively.They claimed the bill eliminates the longstanding statutory confidentiality of specified peace officer or custodial officer personnel records.In March a judge ruled the bill applies retroactively to all personnel records of peace officers not only now but before January 1, 2019.The Judge ruled no records could be released before March 29 giving the unions time to appeal if they want. It does not appear any have appealed.Some agencies tell 10News they plan to start releasing records this week.10News is still waiting to hear from other local agencies about when they are planning to release records. 1238

SAN DIEGO (KGTV) -- La Mesa residents and local business supporters didn't waste time rebuilding their community Sunday morning following a long night of violent protests that left several cars and buildings destroyed.Good Samaritans armed with brooms and paint brushes worked quickly to restore walls inscribed with graffiti and sweep streets strewn with debris.Only hours earlier, hundreds of rioters descended on the small La Mesa Village business district setting fire to numerous vehicles and buildings including a bank, and looting business."Our small businesses are devastated and many were already on the brink due to COVID19. La Mesa Village has been the heart of small business in the city and is a beautiful place for dining, events and memories," wrote Phil Ortiz on a fundraiser page.Ortiz'a gofundme page has already received over ,000 in donations. The goal is to raise ,000."All proceeds will go directly to small businesses that were destroyed or damaged," Ortiz wrote on the page.Saturday's protests started with a mostly peaceful march that drew over a thousand protesters. The calm ended when the large group gathered outside of the La Mesa Police Department and began attacking a bear cat vehicle that was brought in to help disperse the crowd.Looters struck a Walmart, Target, Vons and several stores in the La Mesa Springs Shopping Center.La Mesa officials have issued a citywide curfew for Sunday night effective 7 p.m. to 7 a.m.Supervisor Dianne Jacob sent out the following statement after the night of sestruction: 1556