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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) -- Millions of dollars have been raised and spent in the race to fill the seat for the 50th Congressional District.According to a recently released 10News/Union-Tribune scientific poll, Democrat Ammar Campa-Najjar and Republican Darrell Issa have emerged as the favorites to represent East County's 50th Congressional District.Federal Election Commission (FEC) records show Issa is currently leading in the money game as well. 451

SAN DIEGO (KGTV) - It's rattlesnake season year-round in San Diego but now is the time they come out in full force due to warmer temperatures.San Diego Animal Services says the number of urban sightings this April is higher than this time last year, 94 versus 87. However, for the whole year, sightings are down compared to 2017.Rangers at the Mission Trails Regional Park say hikers should not panic if they see a rattlesnake on the trail. They even recommend taking a picture if you're a safe distance away.RELATED: What to do in the event of a rattlesnake biteRattlesnakes common throughout Mission Trails are the Southern Pacific and Red Diamond. Each can be several feet long and can strike about half their body length.Hiker and volunteer guide Daryel Stager recently spotted a five-foot Red Diamond rattlesnake eating a possum."I thought it was pretty cool, I don't usually see them with prey they've killed," said Stager. "They want to be left alone and get some rays - like going to the beach."Experts recommend keeping dogs leashed so that they do not startle a rattlesnake off the trail.  1112

SAN DIEGO (KGTV) -- Marty Coyne snags the same prime spot at Campland on the Bay every Fourth of July weekend.He parks his massive RV right across from the water."Wouldn't trade it in for any other place to stay in the summer," he said Friday. "It's beautiful here, safe here, the grandkids can run free and have a great time."This year - however - the celebration is quite a bit different - due the outbreak of Covid 19.Campland on the Bay, on Mission Bay's north end, is like many hotels along San Diego's coastline. It's not totally booked.Elvin Lai, who owns the Ocean Park Inn in Pacific Beach, said he was booked in the high 60 percents at a time when the hotel is usually full. "It doesn't mean that I won't get last minute bookings but we're used to being sold out for the month of July months in advance, so it's different."On Friday at the campland, the mood was festive, but the activities were limited - the skate park and basketball courts were taped off. There won't be any bands for outdoor entertainment, and indoor dining is disallowed.Campland on the Bay also placed yellow cones on the beach to give people a clear path to the water. It's also requiring all tents to be spaced out by eight feet. Masks are required in public areas, and rangers are carrying around extra.Still, not every visitor was wearing a mask."Everybody doesn't follow it," said Barry Homer, who is staying on the grounds with his wife Cindy. "It'a always a problem everywhere in the world, for lots of reasons."Hotels and Campland are still open to last minute reservations."We anticipate it's going to be be like this no more than today and tomorrow, and then it'll go down to quiet as people go back to their normal lives," said Ahmed Aitlahcen, the campland's general manafger.The Auto Club predicts 107 million residents of the Pacific Coastal states will take trips this summer. That's down 17 percent from 2019. 1916

SAN DIEGO (KGTV) — It’s a chance for the community to get a behind-the-scenes look into local policing. The program, Inside SDPD, held a few times a year, aims to bridge the gap between the community and local law enforcement. As seen through local demonstrations against police brutality and rogue officers, there can be a divide that exists between law enforcement and the public. “We’re not here to say we hate all police, that’s not what we’re here for. We’re here to say that law enforcement who is acting outside the bounds of justice, equality, equity… those officers need to be fired. They need to be arrested. They need to be jailed if need be,” said Yusef Miller of the Racial Justice Coalition during an October demonstration in San Diego.There is one thing both sides agree on: wanting to build better relationships. San Diego Police see Inside SDPD as helping with that goal. It's hosted in coordination with the San Diego Police Foundation. The program introduces participants into various aspects of policing, including Taser use, use of force simulations, traffic stops, and K9 demonstrations. The goal is to make situations as realistic as possible. For first-time participant Helen Auerbach, it was eye-opening. “Certainty with the body cameras and the shootings. When you see it from one angle and you see the same thing from a different angle, it’s a completely different scenario,” she said. Teenager Logan Miller also participated. “You’re told it’s a simulation, but when you have the props… and the sound [is] very, very loud and you’re actually being interacted with on screen… again the world I keep saying [is] realistic. You are submerged in that situation,” Miller said.Team 10 asked Assistant San Diego Police Chief Paul Connelly what he would say to critics of the department. “I would just say keep an open mind. We have a very difficult job to do,” he said. In an era where community members are demanding transparency, he said the department continues to work toward that goal. “That’s something the San Diego Police Department is really striving to do. For instance, all our policies and procedures can be found on our website. And we hold events like these to invite the community out so they can see exactly how we’re trained.” Auerbach, who found out about the event through an online neighborhood website, recommends the program. “I really thing everyone should do this. I think every child should be exposed to this in school,” Auerbach said. The next "Inside SDPD" event is in December, focused specifically on K9s. There is a suggested donation for the program. Each event can hold roughly 80 people. POLICE TRANSPARENCY PROJECT DISCUSSIONJoin our Facebook group for constructive conversation around these issues. If you are a community member with questions about how the police investigate themselves or have suggestions on how officer-involved shootings or police misconduct can be prevented, we welcome you to join this group and the conversation. Follow this link to join: https://www.facebook.com/groups/transparencyproject/ 3080