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LA JOLLA, Calif. (KGTV)-- A new article shows that wearing masks is even more critical than previously thought. UC San Diego researchers compiled several global studies that looked into how the coronavirus spreads and found that masks can help stop the spread of many aerosol particles.The idea of wearing masks has become a polarized issue in America. But Dr. Kim Prather, a distinguished professor at the UCSD Scripps Institution of Oceanography, says the science is clear."Masks do filter things, and filtering does reduce the spread of disease. That we know," Dr. Prather said. She and her colleagues released a new article compiling the latest COVID-19 studies around the world. Sneezing and coughing release large spit particles up to 26 feet, so that is clearly a point of concern. But Dr. Prather says we also need to focus on the invisible aerosols that can float around for hours, from asymptomatic virus carriers. "They don't have a fever, they're not coughing, they're not sneezing," Dr. Prather said. "But when they're talking, they can produce thousands of aerosols out in their breath, and infect people for days."That is why she reiterates that wearing masks is imperative."You wear a mask not to protect yourself. You wear a mask because you're being thoughtful and protecting other people," Dr. Prather said. One of the studies compares COVID-19 numbers between Taiwan and New York, which share a similar population. While New York had more than 353,000 positive cases and 24,000 deaths by the time Dr. Prather's paper was published, Taiwan only saw around 440 cases and seven deaths. Dr. Prather attributes Taiwan's drastically low numbers, partly to the quickly enacted masking orders. "Taiwan never shut down. They just wore masks," Dr. Prather said. So what kind of facial masks are most efficient? Dr. Prather says one that fits your face properly would protect you the best. Tightly knit, multi-layered cloth masks are good to rewash and reuse. Bandanas can leave many gaps between the contours of your face, which is why it may not be as effective in blocking out particles. Whatever the style, Dr. Prather says that you see the mask moving up and down while breathing, it is a sign that it is working. The more we protect ourselves now, the quicker we can return to normal. "We can get back to a functioning society if we wear masks," Dr. Prather said. "Until tests come in to play or a vaccine comes into place, it'll buy us time, and we can reduce the spread if we take this seriously."Dr. Prather says that while masks do not block 100% of aerosol particles, it is much better to block some than none. 2638

La Mesa (KGTV)- It’s being called one of the most progressive marijuana ordinances in the county. The city of La Mesa plans to unveil its proposed rules this week. City leaders believe lifting limits is the key to defeating illegal pot shops. If passed, the City of La Mesa would be the first in the county to put forth an ordinance without a hard cap on the number of dispensaries within city limits. “We didn’t play that game,” says La Mesa City Council Member Bill Baber. “We’re basically saying they’re in our commercial areas, they have to be regulated, and the market itself will flush out how many get to exist.” Councilmember Bill Baber says the proposed ordinance would weed out illegal pot shops by operating a path to run a legitimate business. It’s a different approach than the one in Chula Vista. City leaders hope a limited number of legal dispensaries will drive customers away from illegal pot shops. Currently, there is only one legally operating dispensary within La Mesa city limits. “We’re proposing our dispensaries that have legally been selling medicinal marijuana to also move one step forward and to sell recreational. It’s the same product.”Under the new laws, the dispensaries will be taxed. The money will go to the city’s general fund. It will help with putting more officers on the street and shutting down illegal operations. Councilman Baber says the city estimates the new ordinance will bring in nearly million a year in city taxes. The funds will also be used to clean up old run-down buildings that once housed illegal dispensaries. “In 4 years our city attorney and our police have shut down 26 of these,” says Baber. West La Mesa Resident, Erik Egelko, says the boarded-up businesses are now bringing in squatters. Behind an old, illegal pot shop on El Cajon Boulevard sits old furniture, trash and the rancid smell of urine. “It just really turned into a slum,” says Egelko. “I see west la Mesa as having this incredible potential.” The La Mesa City Council will be reviewing the ordinance during tomorrow’s city council meeting. There will be public comments for residents to weight in. 2139

LA JOLLA, Calif. (KGTV) - New research at UC San Diego has found that breast milk does not spread the Coronavirus."I think it's safe to say that breast milk is safe, that donor milk is safe, and that the benefits of breastfeeding outweigh the risks," says Dr. Lars Bode, the Director of the UC San Diego Mommy’s Milk Human Milk Research Biorepository, which conducted the study. "We don't have any risks identified at this point."A preliminary research letter, published in August in the Journal of the American Medical Association, found "No replication-competent virus was detectable in any sample."The study analyzed multiple breast milk samples from women who had recently given birth and been infected with SARS-COVID-2, the disease that causes coronavirus. Among 64 samples from 18 different women, they found nothing that could transmit the virus.READ THE REPORTThe Center now has around 400 women enrolled in the study to ensure the results play out over extensive scale testing."Having the information and knowing what the risks are and what you might expect and being prepared for that, it certainly can help reduce anxieties related to having these types of infections," says Dr. Christina Chambers, a pediatrician at UC San Diego.In addition to looking for virus transmission, the researchers are also looking into whether breast milk can transfer antibodies from mother to baby and help the child gain immunity without a vaccine."When mom gets infected, she produces the antibodies," says Dr. Bode. "It's not just in her plasma. It also gets handed over to the milk, and we've seen this for many other diseases as well. There's some act of protection to antibodies and other components in human milk that protect the infant directly."Dr. Bode says they may be able to find a way to synthesize the compounds containing the antibodies so other adults can get their benefit without having to take breast milk away from infants.UC San Diego's MotherToBaby Pregnancy Studies is also running a research project on Coronavirus's effects on pregnant women and babies still in the womb. Dr. Chambers is running that study, and says they hope to publish results sometime in the next year.In the meantime, they're still looking for more women who would like to participate in either study. To sign up, go to BetterBeginnings.org/CovidStudies. 2353

LA JOLLA, Calif. (KGTV) - Dr. Greg Skomal and Meteorologist Joe Merchant are working together as they test a new theory on how sea breeze may correlate with set off a predatory chain reaction.So far their research has taken them to the Bahamas and Cape Cod, both locations on the East Coast, given several recent attacks. Skomal says, "It could be weather conditions it could be water temperature so were testing all these various factors to see if there's any patterns including Joe's ideas that drive the behavior of these sharks." Merchant believes a weather condition called a sea breeze may set off a predatory chain reaction. He says it brings nutrient rich deep water closer to the surface, attracting tiny marine life, which attracts larger fish and in turn attract the oceans largest predators, sharks. Fisheries Research Biologist Heidi Dewar tells 10News, "On the East Coast you have the warm Gulf Stream that moves broad on a continental shelf and our coast we have a cold current coming from the north and a very narrow continental shelf." For this reason, we may not be able to use the same theory for our coast."It's not clear that would translate to the West Coast; we have a very different ecosystem over here," Dewar tells 10News. Dewar says pinpointing sharks' locations and predicting where they will be next is going to require much more data and research. Meantime, she says one thing is certain: the number of sharks in the water is going up."We do know shark population in the North Pacific are increasing and so people will see more sharks in the water." 1588

Law enforcement officials from New York to Florida are examining clues to find the person or persons who sent 10 packages containing what appear to be explosive materials to prominent Democrats, critics of President Donald Trump, and to CNN's New York offices as authorities classify the incidents as domestic terrorism.Three new packages were detected Thursday -- two intended for former Vice President Joe Biden and one for actor-director Robert DeNiro -- each bearing the same markings as the seven packages detected earlier this week. And authorities now believe several of the packages went through the Opa-locka, Florida, processing and distribution center, according to two law enforcement officials familiar with the investigation.The devices mark one of the most serious attempts to stoke fear and terror in the US in a period that has already seen a number of violent political attacks. The apparent bombs, while rudimentary in design, according to law enforcement officials, targeted two former US presidents, a former vice president and potential presidential contender, and numerous outspoken critics of the Trump administration.Investigators are reviewing security footage from the CNN building and examining the packages themselves for potential clues, according to current and former law enforcement officials."Everything is a clue," a law enforcement official said.As authorities examine clues, they are also finding more questions to answer.One key question authorities are puzzling over is why none of the apparent bombs detonated, a second law enforcement source said, raising questions about the skill and motive of the bombmaker.This person said either the bombmaker was good enough to ensure none would go off and never intended them to explode or it was poorly constructed. Authorities consider the bombs to be potentially destructive because of the presence of what is believed to be pyrotechnic powder. Though it appears they were handled through the postal system -- and thus jostled and moved -- without triggering any explosion.William Sweeney, FBI special agent in charge of the New York field office, said Thursday afternoon that the powder discovered with the package sent to CNN did not pose a biological threat but another official said it was undergoing testing.The FBI's counterterrorism team is leading the investigation and has classified it as a domestic terror matter, the law enforcement official said. That classification is based on the absence of other information and could change.The Secret Service, US Postal Inspector Service, and ATF are also working on the investigation with various state and federal offices. Officials said it is possible additional packages could have been mailed to other locations and not yet discovered.NYPD and FBI officials stressed Thursday that the investigation was still in its early stages and they continued to seek tips from the public. 2926