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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) — One person was shot Sunday outside of a College Area smoke shop, according to police.It wasn't immediately clear what led to the shooting, but San Diego Police confirmed that a 20-year-old man had been shot just before 5:30 p.m. in the 5900 block of El Cajon Blvd., outside of Aztec Smoke & Vape Shop.The victim was hit in the leg and chest and taken to a nearby hospital, but their condition was not clear.The area was closed by police for the investigation.10News is monitoring this breaking news. Please check back for updates. 561

SAN DIEGO (KGTV) -- Power has been restored throughout San Diego County following outages amid high winds and dry conditions. Earlier this week, SDG&E said forecasted conditions that may affect power lines prompted them to consider pulling the plug on customers over public safety.Santa Ana winds swirled across the county Wednesday, with the height of the event possibly coming on Halloween, as winds turn offshore Tuesday night through Thursday, matching — if not eclipsing — wind speeds compared to last week's Santa Ana event. RELATED: Check 10News Pinpoint Weather ConditionsA Red Flag was issued from 11 p.m. Tuesday through 6 p.m. Thursday from San Diego's inland communities to the mountains.SDG&E crews began the process of restoring power to communities Wednesday afternoon."Before noon, we restored power to more than half of the approximately 25,000 impacted customers," SDG&E posted on twitter.(1/2) Our field crews continue making progress throughout the region as they work hard to fully restore customers still without power. Our highly-trained electric team is experienced and dedicated to maintaining the highest standards of safety. pic.twitter.com/k84SAbfaBa— SDG&E (@SDGE) October 31, 2019 1234

SAN DIEGO (KGTV) — Officials are seeking the public's help to identify a young woman who was hit and killed on Interstate 5 near the San Clemente Border Patrol station almost two weeks ago.The Hispanic female, believed to be in her late teens to early 20s, was hit while trying to run across northbound I-5 lanes at about 9:30 a.m. on Aug. 9.She may have recently traveled to the country from Mexico or another Central American country, according to Medical Examiner investigator Tessa Lee.RELATED: Unaccompanied girl hit, killed walking on Interstate 5 near San Clemente border station"We are hoping that someone may recognize this young woman so we can identify her and notify her family," Lee said.A fingerprint search in the FBI and U.S. Border Patrol databases came back with no matches.The woman had brown eyes, long hair, weighed about 111 pounds, and was 5-feet 1-inches tall. She didn't have any identification at the time of her death.She was, however, wearing distinctive clothing: A maroon shirt with repeating cartoon prints and the word "travels" on it, jeans with a stitched design on a brand tag reading "Eemociones," and gray high-top sneakers with a heart on the sides and turquoise metallic studding.Officials have released a sketch of the woman as she would've appeared while alive.Anyone who may have any information about the woman's identity is asked to call the Medical Examiner's Office at 858-694-2905 and mention case number 2018-01951. 1496

SAN DIEGO (KGTV) — One person was shot Sunday outside of a College Area smoke shop, according to police.It wasn't immediately clear what led to the shooting, but San Diego Police confirmed that a 20-year-old man had been shot just before 5:30 p.m. in the 5900 block of El Cajon Blvd., outside of Aztec Smoke & Vape Shop.The victim was hit in the leg and chest and taken to a nearby hospital, but their condition was not clear.The area was closed by police for the investigation.10News is monitoring this breaking news. Please check back for updates. 561

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