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SAN DIEGO (KGTV) -- Caltrans maintenance crews closed the westbound Interstate 8 connector to northbound state Route 67 at 9 p.m. Thursday night, but lanes were reopened at 5 a.m. Friday morning. The closure took effect for guardrail repair, according to Caltrans.Signs were posted to direct motorists on westbound I-8 to exit at West Main Street and turn left to eastbound I-8 to SR-67.Motorists were reminded to be work zone alert and slow down when approaching Caltrans vehicles with amber flashing lights.Caltrans says Californians can expect more roadway improvement projects like this made possible by the recently passed Road Repair and Accountability Act of 2017, Senate Bill 1.  715

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) -- As many San Diego business owners fold due to coronavirus pandemic pressures, a few brave entrepreneurs are launching their businesses now, including a Pacific Beach couple that turned their passion for plants into a "blooming" business.It was the sign of the times for boxing instructor Cody Warden -- COVID-19 made him jobless."I was laid off during that time," Warden said. "It was not legal for me to teach boxing."His girlfriend, Tammy Nguyen, a social media content manager, was also now working out of their Pacific Beach home. But when the couple looked around, all they saw was joy."We were getting all these houseplants in our house, and it was filling this void if you will," Warden said. "It brought us companionship in a time when it was really difficult to see your friends or family."So they took a leap of faith last month, and decided to turn their passion into a business. They launched IvyMay & Co., an online houseplant curating company that offers tips and free, contact-less delivery anywhere in San Diego County."Plants are a form of therapy for people who might be depressed during this time, and being able to take care of these plants and seeing them grow gave a lot of people happiness," Nguyen said.Science backs this up. A 2015 study published in the Journal of Physiological Anthropology looked at the psychological responses of young adults to a computer task, versus an indoor plant-related task. Researchers found that people who interacted with plants had significantly lower blood pressure, as well as physiological and psychological stress.Although Warden and Nguyen cannot see their customer's smiles underneath the masks, they can hear it in their voices when they deliver. They say it reassures them that starting a business that brings joy during the pandemic was the right thing to do."If I could keep a house plant alive, you can too!" Warden laughed. "There's no such thing as a green thumb. Basic things, learn how to read your plant, and listen to what it's telling you."As the business grows, Warden and Nguyen hope to partner with local artists who can create unique pots for their plants. 2164

SAN DIEGO (KGTV) -- As an active 45-year-old man who loves to surf and take adventures with his daughter, Bryce Olson was the last person his friends expected to get cancer.In 2014, a call while at work confirmed it: stage IV metastatic prostate cancer.Metastatic means the cancer has spread to other parts of the body, lymph nodes, bones or other organs.“It was just shocking and sad and I didn’t know anything about this stuff, so I just...I rolled into whatever my doctors were recommending," said Olson.He says the standard of care - surgery, chemotherapy, and the initial hormone therapy - wasn't working.“I started coming to terms with my own mortality. I didn’t even think I’d see my kid get out of elementary school and I was losing hope," said Olson.Olson says he wanted to make his final days count. The Intel employee started learning about precision medicine and eventually pursued DNA sequencing to find out exactly what was driving his disease.“I'm a believer in profiling your tumor at a molecular level and trying to understand what’s driving your unique disease, and then taking that data and then finding the right drug for the right person at the right time," said Olson.His results led him to a clinical trial in Los Angeles, where he was a perfect molecular match for the drug being tested.Four years later, Olson's precision medicine journey led him to San Diego's Epic Sciences.“We're actually going to a place where no test has gone before," said Murali Prahalad, President and CEO of Epic Sciences. "These are metastatic patients; the disease has already spread. And we’re trying to understand in the later stages of the disease when it’s far more complicated, how do you then understand which treatment is the right one.”Patients like Olson have two treatment options, chemotherapy or hormone therapy."It's very important to know which medicine is going to work," said Pascal Bamford, Chief Scientific Officer of Epic Sciences, "At the metastatic end of this disease every week, every day, every month is critically important."The company has created a blood test to make the choice easier, called the Oncotype DX AR-V7 Nucleus Detect.If the antigen AR-V7 is detected in a patient, they have built a resistance to hormone therapy, meaning chemotherapy would likely be a better treatment option.“We think it’s very groundbreaking, to say this is the first test that can tell a patient which drug to go on to extend their life," said Ryan Dittamore, Chief of Medical Innovation.Dittamore says the test helps provides certainty for doctors. Patients they've studied have almost doubled their life expectancy with the AR-V7 test.“It can mean the world, not only to patients but loved ones," said Dittamore.Olson was AR-V7 negative, meaning he could continue hormone therapy.Four months in, it's working. “I’m going to see my kid not only get out of high school but college and get married. I’m fully confident that I can do that because I’m just going to keep pushing," said Olson.In December 2018 the AR-V7 test will be covered by Medicare, meaning thousands of more men will have access to it. 3150

SAN DIEGO (KGTV) -- Cool zones are open around San Diego County as the weather heats up. The cool zones, spread out throughout the county, provide designated air-conditioned facilities that provide a place to beat the heat. According to county officials, the cool zones provide a place where seniors and others can congregate to protect their health and reduce individual energy costs. The program has been in operation since 2001. The County Health and Human Services Agency Aging and Independence Services partners with San Diego Gas and Electric to provide the service. Click here for a complete list of county cool zones and their hours of operation. Check out the list below for tips on beating the heat: Slow down. Be your most physically active during the coolest part of the day, usually between 4-7 a.m. Pace yourself when engaging in physical activity.Stay indoors as much as possible. If air conditioning is not being used, stay on the lowest floor. Keep shades down and blinds closed, but windows slightly open.Electric fans do not cool the air, but they do help sweat evaporate, which cools your body.Take a cool shower, bath or sponge bath.Avoid using the oven.Wear lightweight, loose-fitting, light-colored clothing. Light colors will reflect away some of the sun's heat.Air out hot cars before getting into them.Never leave children or pets inside vehicles at any time, even with the windows cracked. Temperatures inside a vehicle can reach lethal levels no matter what the weather is like.Drink more fluids than usual even if you do not feel thirsty.Water is the safest liquid to drink during heat emergencies. Avoid drinks with alcohol or caffeine; they make the heat's effects on your body worse.Eat small meals and eat more often. Avoid foods that are high in protein, which increases metabolic heat.Avoid using salt tablets unless directed to do so by a physician.If you take diuretics, ask your physician about a lower dosage during hot weather.If it is safe to do so, leave windows open at night. Open windows on two sides to create cross ventilation.Place a piece of cardboard covered with aluminum foil in sunny windows to reflect sunlight and heat away from the house.Vacuum, clean or replace air filters regularly for maximum cooling efficiency.If affordable, install outdoor awnings or sunscreens.Call your physician if you feel you may be experiencing a heat-related illness. 2412