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SAN DIEGO (KGTV) — Nearly three-quarters of the students in San Diego County are currently learning from home, and those numbers don’t make a lot of sense to MIT professor Martin Bazant.Bazant is one of the creators of the COVID-19 Indoor Safety Guideline. The free online tool simulates the fluid dynamics of respiratory droplets in various kinds of rooms to show users the risk of different indoor environments.“If you run the numbers for a typical classroom, especially if the students and the teachers are wearing masks, then the amount of time in the room can be very significant,” Bazant said. “Essentially those people could spend a week in the classroom and not have a problem.”Bazant says the six-foot rule that has largely determined which businesses can stay open is overly simplistic. In some cases, he says the rule creates a false sense of security. In other situations, he says it causes the closure of businesses or schools that could safely operate.“If you place nursing home beds six feet apart in a shared room, they are absolutely not safe,” he said. But he said well-ventilated classrooms, with teachers and students in masks, are another story.“It's only the United States where we follow the six-foot rule. That's given by the CDC. The World Health Organization all along has been saying one meter, which is about three feet. If you simply followed the one-meter rule, all our schools would be open, as they are in most of the world right now,” he said.Bazant and his colleague John Bush said they set out to design a tool that would reveal the risk of transmission based on science, not guesswork.Users start by selecting a room type, like a classroom or an airplane. From there, they can control a wide array of variables to dial in the risk, like the room size, the ceiling height, and the ventilation and filtration systems.From there, users can further tune the model by human behavior. How many people are in the room? Are they whispering, shouting or singing? How many are wearing masks?Mask usage is a critical component, Bazant says. The model quickly reveals the challenges of maskless activities in rooms with poor ventilation. Put five people without masks in a 400 square foot room with closed windows, and it becomes unsafe after 33 minutes.Bazant says studies on super spreader events show in indoor environments, the distance from an infected person doesn’t matter. Infected droplets spread and mix throughout the room like second-hand smoke from a cigarette.But with masks trapping droplets and diverting them upwards like a chimney, an environment like an airplane could be safe for several hours, according to the model. With more than 95% of the passengers and crew wearing surgical masks, a Boeing 737 could support 200 people -- around full capacity depending on the configuration -- for 18 hours. 2850

SAN DIEGO (KGTV) - President Donald Trump started a five-day treatment of Remdesivir Friday, according to Navy Commander Dr. Sean Conley.Gilead Sciences is a California-based company, with offices in Oceanside, making the experimental drug Remdesivir. That drug saved San Diegan Troy Kahle's life and has saved others."I did survive and I did have the five-day treatment," Kahle said. He went to the hospital March 24 and shortly after went into a medically induced coma.RELATED: Medical expert explains President Trump's COVID-19 treatment RemdesivirHe received his first dose of Remdesivir around March 30 and was released from the hospital April 10, almost six months ago. "I feel like I'm back 85% which is fantastic," said Kahle.The drug does help patients in certain circumstances, according to doctors.Dr. Christian Ramers, Chief of Population Health at Family Health Centers San Diego, said Remdesivir slows down the production of the virus. He said new information created by a supercharged immune system.He said the virus triggers the immune system to respond with force, creating damaging inflammation. Ramers said that's why the president and other patients are taking a cocktail of medications to battle the viral spread and inflammation. That inflammation leaves scarring in the lungs and lasting effects."If I over exert myself I have an asthma attack, with the wheezing and I've never had asthma before," Kahle said.He hopes by sharing his story to prevent at least one person from suffering the way he has."Please take it seriously, wear a mask, socially distance wash your hands use hand sanitizer. The only way we're going to get around, or on the other side of this global pandemic is if we all work together." 1738

SAN DIEGO (KGTV) - Only in their second year of operation, Wheels of Change is preparing for a major expansion this year.San Diego teenager, Kevin Barber, and his mom, Carolyn Barber, MD, initially launched the program in 2018 in partnership with Alpha Project.Homeless individuals are paid /hr to clean up trash, traveling together in a van to different job sites. Thanks to new sources of funding, the nonprofit will be able to expand crews from 10 to 20 individuals, serving the community five days a week. "We were able to show the world, hey this works! Let's keep funding it more and let's expand the program," said Kevin. The city committed 0,000 to help fund the program, and they've also raised additional funding privately and from foundations. The Lucky Duck Foundation, Davis Charitable Fund, SDGE, the Danna Foundation, and multiple others, have been financial and/or strategic supporters of Wheels of Change at Alpha Project.Wheels of Change plans to employ over 5,200 homeless individuals in 2019, up from 375 their first year. 1057

SAN DIEGO (KGTV) - Pounds of marijuana, concentrates and edibles, cash, and handguns were seized from a Pacific Beach pot dispensary Thursday.San Diego Police raided Truly Green, located at 4150 Mission Blvd., at about 8 a.m. for illegally operating the business.The seizure included 57 pounds of high-grade marijuana, more than 1400 marijuana concentrates and edibles, ,100 in cash, and two handguns.Two employees were arrested for possession of marijuana for sale and operating a business without a permit. They were released with a citation.Police said the owners were not present, but police said they will be charged. 637

SAN DIEGO (KGTV) — Officials have called off the search and rescue operation for eight service members who went missing after an amphibious assault vehicle accident off San Clemente Island last week.The 15th Marine Expeditionary Force said in a release Sunday that all eight members — seven Marines and one sailor — are presumed dead after it was determined, "that there was little probability of a successful rescue given the circumstances of the incident."Officials say they searched for 40 hours covering more than 1,000 square nautical miles in their efforts to find the missing service members.RELATED: Camp Pendleton Marine dies, 8 missing in training accident off San Clemente Island“It is with a heavy heart, that I decided to conclude the search and rescue effort,” said Col. Christopher Bronzi, 15th MEU Commanding Officer. “The steadfast dedication of the Marines, Sailors, and Coast Guardsmen to the persistent rescue effort was tremendous.”Officials said their efforts will now turn to recovery of the missing service members. An offshore supply vessel HOS Dominator, as well as Undersea Rescue Command, are surveying the seafloor to help.“Our thoughts and prayers have been, and will continue to be with our Marines’ and Sailor’s families during this difficult time,” said Bronzi. “As we turn to recovery operations we will continue our exhaustive search for our missing Marines and Sailor.”RELATED: Safety examined after deadly Southern California amphibious assault vehicle accidentOn July 30, 15 Marines and one sailor were participating in the training exercise off the coast of San Clemente Island when the AAV began taking on water and sank. Of the 16 service members on board, eight Marines were rescued, one Camp Pendleton Marine died at the hospital, and two others were hospitalized in critical condition as of Saturday.The cause of the accident is still being investigated. The names of the Marines and sailor will be released 24 hours after their next of kin are notified, officials added.The USS John Finn, the USS Makin Island, the USS Somerset, and the USS San Diego all assisted in the search and rescue effort, as well as 11 U.S. Navy SH-60 helicopters, multiple Navy and Marine Corps small boats, the U.S. Coast Guard Cutter Forrest Rednour and a Coast Guard MH-60 Jayhawk helicopter. 2324