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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 injured late Friday after a stabbing near Fox Canyon in eastern San Diego.A 25-year-old man was with two other people in the 4900 block of Auburn Dr. just after 10 p.m. when an unknown suspect walked up to the group and got in an argument with the victim, San Diego Police said.The argument escalated, ending with the suspect stabbing the victim multiple times in the left side of his body, police said. The suspect fled the area heading northbound.The victim was taken to a nearby hospital with non-life threatening injuries.Anyone with information is asked to call SDPD 619-531-2000 or Crime Stoppers at 888-580-8477. 661

SAN DIEGO (KGTV) -- One person was shot in San Diego's Shelltown neighborhood Sunday afternoon, San Diego Police confirm.According to San Diego Police, the shooting happened just after noon at the La Michoacana grocery store located at 1702 Vesta Street. The suspect, a man in his 20s, pulled out a handgun and demanded money from the cash register.The owner, a 40-year-old man, opened the register and gave the man money, police said. The suspect went to a second cash register and demanded money. The employee opened the second register and gave the suspect money.As the suspect was turning to leave, the owner pulled out a handgun. The suspect turned to the owner and the owner shot the suspect twice, hitting him in the abdomen and in the wrist, police say.The suspect was taken to a nearby hospital, but police said his injuries do not appear to be life-threatening. 879

SAN DIEGO (KGTV) -- More than 20 people were arrested in San Diego as part of a statewide sanctuary enforcement operation carried out by Immigration and Customs Enforcement agents.ICE officials said the arrests were made between Sept. 28 and Oct. 2, with the focus on “criminal aliens and individuals who have violated U.S. immigration laws.”According to officials, arrests were made in San Diego, Encinitas, Vista, Lakeside, National City, Poway, Fallbrook, Spring Valley, Escondido, Oceanside, and San Marcos.In a news release, ICE officials said:“Of those arrested, 10 were the direct result of sanctuary state laws that force local law enforcement not to honored a lawfully issued immigration detainer. Two arrests were the direct result of the law enforcement agency releasing the individuals prior to ICE being able to place an immigration detainer on their case.Of those arrested, over 80 percent had prior criminal convictions and/or pending criminal charges. Of those, the criminal offenses included Lewd and Lascivious Acts with a minor under 14 with Force, Domestic Violence, Assault, Possession of Control Substance for Sale, Possession of Control Substance, Vehicle Theft, Burglary, and Driving Under the Influence of Alcohol.One individual who was arrested during the operation will face federal criminal prosecution for having illegally re-entered the U.S. after their removal. Those who were primary targets of this operation have final orders of removal issued by a federal immigration judge. Their due process was completed, and they will be removed from the United States. The individuals who were arrested and require adjudication from an immigration judge will be placed in detention pending the outcome of their removal proceedings.”Gregory Archambeault, Field Office Director for ICE Enforcement and Removal Operations in San Diego, said, “The State of California has chosen to prohibit local law enforcement agencies from cooperating with ICE to protect public safety. These local agencies are forced to release criminal aliens to the street, abandoning the victims of crimes and the innocent members of their communities. ICE is committed to upholding public safety, and the rule of law, by continuing to target, arrest and seek the removal of criminal aliens released from the custody of local law enforcement.” 2345

SAN DIEGO (KGTV) — Petco Park will host California's first concerts since stay-at-home orders began, with drive-in performances and movie screenings to benefit Feeding San Diego.The drive-in events, which will be held at the Lexus Premier Lot, will be held in June, featuring performances by Switchfoot and screenings of the film "Anchorman."Social distancing precautions will be taken, according to stadium officials, with attendees being asked to stay inside their vehicles, staff wearing PPE gear, and practicing sanitation protocols.Net proceeds will go to Feeding San Diego, which has faced massive demand amid the coronavirus pandemic. Anyone who wants to make a donation to Feeding San Diego can do so here.June's schedule is as follows:Saturday, June 6: Screenings of the movie "Anchorman" at 8:30 p.m. and 11:30 p.m. | Tickets on sale May 29 for Padres membersSunday, June 7: Performances by B-Side Players, SM Familia, and Los Sleepwalkers at 12 p.m. | Tickets on sale May 29 at 5 p.m.Sunday, June 7: Performances by Switchfoot and HIRIE (acoustic) at 7 p.m. | Tickets on sale May 29 at 5 p.m.Petco Park says each concert will feature full a stage and sound production, and multiple video screens for attendees."Utilizing our ballpark and its surrounding areas as a way to help combat hunger in our community during these challenging times is something we are honored to do," said Erik Greupner, President of Business Operations for the Padres. "By hosting this concert and other drive-in events, we hope to give San Diegans a unique entertainment experience in the safe and comfortable confines of their own vehicle while raising funds for a great organization in Feeding San Diego."Petco Park is also hosting drive-in high school graduations on Friday, June 5. 1780

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