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SAN DIEGO (KGTV) — As temperatures warm up, there is some early research suggesting air conditioning units could increase the risk of spreading COVID-19.One team of researchers swabbed several kinds of air conditioning units and found traces of the virus on one out of every four samples.One of the authors, University of Oregon professor Dr. Kevin Van Den Wymelenberg, said the research “does give us some pause.”Air conditioning units bring in little outside air, particularly when temperatures are very hot, posing a risk that viral particles could be recirculated into rooms, Van Den Wymelenberg said.However, just because the study found traces of the virus in A/C units, it doesn’t prove people can actually get sick from the contaminated air because it’s not yet clear how many viral particles it takes to infect someone, he noted.“Nobody knows what that minimum threshold is so we need to take as many precautions as possible,” he said.Dr. Edward Nardell, a professor in the Departments of Environmental Health and Immunology and Infectious Diseases at the Harvard T.H. Chan School of Public Health, said air conditioning units can generate air currents that can carry large particles farther, similar to what researchers found contributed to the spread of the novel coronavirus disease in an air-conditioned restaurant in Guangzhou, China."You are not socially distanced as much, but you're re-breathing the same air that someone else just exhaled," Nardell said. "We call it rebreathed air fraction, and if someone is infectious, often asymptomatic, you're going to be rebreathing their small particles."This week, a group of 239 scientists from 32 countries asked the World Health Organization to update its COVID-19 guidance to reflect that the virus is airborne.On Thursday, the WHO released updated guidance acknowledging that airborne transmission can’t be ruled out, but stopped short of confirming that the virus spreads through the air.Instead, the WHO said the virus primarily spreads through droplet transmission, where larger particles come out of an infected person’s mouth, then fall quickly to the ground or onto surfaces. In airborne transmission, the particles stay floating for a long time.“I think they’re underweighting the importance of this airborne route based on the best available information,” said UC Berkeley Professor Emeritus William Nazaroff, one of the signatories of the letter to the WHO.He said in a poorly ventilated room, particles might linger for 30 minutes to an hour.Scientists say one of the best ways to protect yourself is to open windows, to increase the circulation of fresh air.Scientists say upgraded air filters in AC units and standalone air purifiers could also help.Germicidal lamps may also be effective, Nardell said. The technology is almost 100 years old, and has been proven effective in protecting against tuberculosis infection.The lamps, which shine ultraviolet light, are set up to shine horizontally, high up in the room to kill floating pathogens.Nardell said the technology can be deployed cheaply and easily in a number of settings.Additional reporting by Lauren Rozyla at WFTS 3159

SAN DIEGO (KGTV) -- August is one of the most popular months for newborn arrival, and a new WalletHub study is diving into best and worst states to have a baby. California ranked in the middle of the list overall, taking the 21st spot. According to the report, California ranks 16th in the nation for infant healthcare, 9th for baby-friendliness and 19th for family-friendliness. California also has the third lowest infant-mortality rate in the country. However, when it comes to the cost of having a baby, California places last in the nation. To rank states, WalletHub compared them against four key metrics, including: cost, health care, baby-friendliness and family-friendliness. 694

SAN DIEGO (KGTV) - Businesses are bracing for Governor Gavin Newsom's announcement Monday after San Diego has been on the state's watch-list since July 3, due to a surge in coronavirus cases.Newsom could announce indoor activities, like arcades, restaurant dining, movie theaters and museums will be shut down to contain the spread.This news comes as San Diego restaurants faced a volley of changes over the past four months."I think that the only thing that is constant is the change," Chief Brewing Officer Mike Hess said from his Imperial Beach brewery.He said the lucky thing about most of his locations is they have outdoor space, so they can shift more easily. "I called everybody Friday when we got word when it might change on Monday and everybody was like ‘Okay what do we need to do?’" He said sighing.READ RELATED: Mike Hess Brewing Company serving up a different type of alcoholSome of the changes he's made to be compliant with health orders have come at quite a cost. He said in one pay period his labor costs at the Imperial Beach location are three times the norm because they switched from bar service to table service and have to sanitize more often.Across town at Small Bar, Owner Karen Barnett said they shut down at the beginning of July and don't have any plans to reopen.'At the end of the day a business is a business, people are more important.' Barnett said they have been doing take out since the beginning of the pandemic, but never reopened for dine in.She said the small space at her business and horror stories of other restaurants and bars dealing with enforcing social distancing, wearing a mask and employees testing positive with the virus, helped her stick to her guns.On Friday, she posted this on Instagram, "After much consideration, Small Bar will be closing for the entire month of July (possibly longer). When the global pandemic was declared almost 4 months ago, we decided to quickly switch gears and continue to serve our community as thoughtfully and safely as possible. Unfortunately, Americans both near and far don't seem to be listening as closely to science as we are. We no longer deem our services "essential". We care about our community and feel the best move right now is to take a step back for a few weeks. In the meantime, we will be working on our footprint and how we can safely reopen later. We encourage more businesses to follow our lead to help flatten the curve, yet again. We will be working on ways to serve with as little contact as possible, but until that time we wish you all health and peace in the world. Take care."Monday we will find out if all restaurants will have to shut down inside dining, and wait at least three weeks until reopening. 2725

SAN DIEGO (KGTV) -- Children in San Diego could soon go without food if the federal government doesn't extend waivers put in place during the COVID-19 pandemic. The San Diego Unified School District is warning about that possibility after the U.S. Department of Agriculture ended supplemental food support for local families. The changes are expected at the end of September. The USDA decided they would end the supplemental support during the pandemic. After Sept. 30, families will be required to verify identification, proof of school attendance and eligibility to quality for the free family meals. These things were waived in March because of the pandemic. SD Unified officials say the USDA hasn't responded to their request to extend the waivers. District officials are taking steps to try and fill in the gaps by working with partners like the San Diego Food Bank and Feeding San Diego. The district also announced triple the distribution sites, up from 28 to 82. Students or their parents/guardians who qualify for subsidized meals can drive through or walk up to receive breakfast and lunch, Monday through Friday, from noon to 2 p.m. during the 2020-21 school year, which begins on Aug. 31.The district is also offering assistance to any family that needs help completing the required forms. The district says they have distributed more than 4 million meals to students since March. They say these meals are often the only quality meal they receive. ABC 10News reached out to the USDA for comment but so far have not heard back. 1547

SAN DIEGO (KGTV) — California public health officials say the Southern California region has run out of ICU bed capacity.The region, which includes San Diego and 10 other counties, hit 0% capacity, as the state reported 52,200 more coronavirus cases on Thursday. California officials say regional ICU capacity is calculated based on the total number of adult ICU beds minus neonatal and pediatric ICU beds. Adult ICU capacity includes staffed ICU beds and ICU surge beds.San Diego County said Thursday that it was currently at 16% ICU capacity after adding 2,604 new virus cases. There are 295 ICU cases in the county out of 1,186 hospitalizations. County health officials said there has been a 20% increase in ICU cases locally over the last seven days.The Southern California region was one of four regions under the 15% ICU capacity threshold for California's recent stay-at-home order:Bay Area: 13.1%Greater Sacramento Region: 11.3%Northern California: 25.8%San Joaquin Valley: 0.7%Southern California: 0.0%The Southern California region includes Imperial, Inyo, Los Angeles, Mono, Orange, Riverside, San Bernardino, San Luis Obispo, Santa Barbara, and Ventura counties. 1182