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SAN DIEGO (KGTV) — Two new studies published this week suggest people with blood type O have a lower likelihood of catching COVID-19 and developing severe illness than people with other blood types.Blood type is a characteristic we inherit from our parents and there are four major blood groups: A, B, AB and O.Danish researchers looked at nearly 500,000 people who tested positive for COVID-19 and found that people with type O were underrepresented.In a study published in the journal Blood Advances, the researchers found 38.4 percent of those infected had type O when that type actually makes up 41.7 percent of the population in that area.The researchers say the findings suggest people with type O are less likely to get infected in the first place.On the other hand, the team found that people with type A blood were overrepresented: 44.4 percent of those infected had type A compared to an expected value of 42.4 percent. The researchers suggest people with type A might be more at risk.Another study, also published in Blood Advances, looked at 95 critically ill patients in Canada. They found people with type O or type B blood tended to have a shorter stay in the intensive care unit, an average of nine days for those blood types compared to 13.5 days for people with type A or AB.They also reported that people with type O or type B were less likely to need a ventilator, with 61 percent of cases requiring mechanical ventilation compared to 84 percent for people with blood type A or AB.“Yes, there may be some of these associations. I don't think it's fully understood at this point,” said Dr. Christian Ramers of Family Health Centers of San Diego, who was not involved in the studies.The science on COVID-19 risk and blood type is mixed. These two new studies align closely with a previous study in China and another in Europe, but a third study in the U.S. found no significant link between severe COVID cases and blood type.At this point, doctors aren’t sure why blood type might affect outcomes with the disease, but there are several theories.“The immune system is an incredibly mysterious and complicated thing that we don't fully understand,” Ramers said. “Blood type sort of plays into that because people with different blood types actually have slightly different immune systems and immune responses.”Your blood type impacts the kind of antibodies you produce. That is why it is so important in blood transfusions to get the right blood type; blood from the wrong donor can trigger antibodies that attack those red blood cells.People with blood type O have two sets of antibodies, known as anti-A antibody and anti-B antibody. People with type A or B only have one or the other.Researchers in the Canadian study hypothesized that the anti-A antibody in particular may help control the coronavirus. People with blood type O and blood type B produce this kind of antibody. Individuals with type A or type AB do not.People with blood type O also have characteristics that make them less prone to issues with blood clotting, a major issue in severe cases of COVID-19.Experts say that if type O blood is protective against the virus, it’s not by a large amount.And this protective benefit doesn’t extend to all pathogens. Past studies have shown people with type O are more at risk from a type of bacteria that can cause ulcers and cholera. 3369

SAN DIEGO (KGTV) -  With three kids at home, including a newborn, managing a family budget is always a struggle for Theresa Washington and her husband. They're trying to survive on his Navy salary, which, some months, doesn't entirely cover everything."You try to balance everything and try to budget and hope that it will get through," Washington says.Theresa used to be in the Navy as well. She quit when daycare for the kids got too costly.RELATED: Rep. Susan Davis backs legislation making military families eligible for food aidOver the years, her family has moved from Florida to Minnesota to San Diego through Naval deployments and re-stationing. She says California is easily the most expensive place she's lived.Fortunately, in 2017, Washington found the Military Distribution Program through Jewish Family Service.Once a month, JFS does a food giveaway at Camp Pendleton and the Murphy Canyon military housing. Aside from proof of active military service, there are no eligibility requirements."Making this just for them, I think it shows them a little more dignity and allows them to access the services they need within their communities," says Sasha Escue, who runs the Food and Nutrition Program for JFS.The Military Distribution Program started ten years ago, as JFS and other groups began to notice the trend. At the Jewish Family Service food distribution, families can get fresh fruit and vegetables, diapers and frozen meat. They try to make sure the food they give away is nutritious and balanced. In 2017, JFS served 1,000 individual military families.As word gets around, they expect that number to rise."My friends and I remind each other every month," says Washington.According to the San Diego Hunger Coalition, 1 in 10 people who go to food banks has a military member in their family. They believe that number is even higher in San Diego where the cost of living can quickly eat through paychecks."These are community members who are making the ultimate commitment with their lives and their time," says Hunger Coalition Executive Director Anahid Brakke. "We should be paying enough that they don't have to go to food distribution."According to numbers provided by the Hunger Coalition, enlisted servicemen and women with under two years of service make between ,200 and ,500 per year. That should qualify them for government food assistance like WIC or SNAP. But, because their housing allowances are also factored into their annual income, many are over the federal poverty level limits to quality.Some people are trying to change that. Representative Susan Davis introduced H.R. 1078 in Congress, the Military Hunger Prevention Act. According to language in the bill, it's designed to exclude housing allowances from determining eligibility for federal assistance. It's currently in the House Subcommittee on Military Personnel.In the meantime, military advocates say the best way to help out is to donate to local food banks, like Feeding San Diego. It's a way to make sure military members can serve and their families can eat."It's amazing," says Washington. "We can't thank them enough for helping us." 3175

SAN DIEGO (KGTV) -- Underwater robots showcased difficult tasks and the teams in charge of the technology are hoping to take the crown for the 21st International Robosub Competition in Point Loma.A total of 47 teams from 10 different countries came together with one mission, navigate their robots through a tricky underwater course."We have mechanical, electrical, and computer science, and it's all coming together to make one cohesive vehicle,” said David Garcia, one of the team members from Cal State.Students were able to check out each other’s models to learn what sinks and what swims. For those who think the competition is all fun and games, meet Chinoros Nakthewan from Kasetsart University in Bangkok.His team was part of the Thai cave rescue effort. At the time, they determined that his robot wouldn’t be able to reach the survivors, so they resorted to using their other equipment."We made a decision to bring sonar and drone to observe the high level of the cave,” said Nakthewan. That was one of the many things credited with the successful rescue of the entire soccer team. 1099

SAN DIEGO (KGTV) -- With indoor dining shutdown, local restaurants are relying on takeout orders to stay afloat.Curbside pick-up, with a holiday flair, has been the specialty of the house at Parc Bistro and Brasserie in Bankers Hill. The service has also helped the eatery stay alive. In true holiday spirit, customers will see Santa and his Christmas elves deliver their food right to their car."If we could just dress up a little bit, and feel good about it, we can spread that positive energy in these tough times," says restaurant general manager Samantha Scholl.Scholl calls the last nine months devastating and an emotional roller coaster. She had to layoff close to 30 of her staff since March "We've had to pivot and change, and then we had to shut down and re-open. But we are grateful because we've had such strong support from our community," said Scholl.And since there is no dining in, Parc Bistro is offering curbside holiday packages, of which they have sold out all 250."The community has been behind us since the beginning and especially this last year which has been incredibly tough," Scholl says.The community has been behind Parc Bistro, and Scholl has been behind her staff. "I did another holiday relief fund through GoFundMe. My goal is to raise ,000 and I'm at about ,000 right now. Also, all of the gratuities we receive from guests from our holiday takeout is dispersed equally among all our staff," she says.But while Christmas packages are all sold out, Scholl says you can still get your New Year's Eve order in. "You have to have our beef Bourguignon it's a French classic," Scholl said. 1634

SAN DIEGO (KGTV) - For the second time this week, Rancho Bernardo High School Principal Dave LeMaster met with concerned parents Thursday regarding Monday's school threat.Students arrived for class Monday morning to find violent threats spray-painted onto around 20 locations on campus. They all indicated a school shooting would happen that day at noon, with messages including "murder, blood, chaos" and "Florida was nothing".LeMaster told 10News police arrived quickly and within minutes determined there was no credible threat.An email notification went out to parents around 8:30am, after class had started, although LeMaster said if there was a danger, notification would have been sent out much sooner."We work with law enforcement to make sure the situation is secure and everyone is safe, and oftentimes, communication comes after that,” said Poway Unified School District spokesperson Christine Paik.Word of the incident quickly spread among students and their family members, which provides a challenge for administrators to inform parents."In the age of social media and texting, sometimes those unofficial communications will beat us to it ," Paik said. "But we have a responsibility to be accurate before we are able to put out those messages.”One parent told 10News she thinks the school should immediately notify parents of any threat to the school to give them the option of keeping their kids away from campus, but other parents worry that doing so could cause unnecessary panic and disruption.PUSD said it will work on improving the time it takes to send notifications to parents. The district is currently working on adding a text message option for parents to receive such notifications.10News reached out to the San Diego Police Department for an update on its investigation into the threats, but has not heard back. 1856

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