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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) - When school started last week at Dailard Elementary in San Carlos, the father of a second grade student noticed several large spiders and egg sacks in the area where kids hang their backpacks. He took several photos documenting the issue. When he reached out to 10News about a week later, he said he had already spoken to a teacher, custodian, and the principal about the issue but was told a work order would need to be put in to get pest control to the school. The same parent said the spiders appeared to be brown widows, which are venomous and a bite from one requires medical attention. A San Diego Unified School District spokesperson confirmed that a pest control team was sent to the school Thursday to get rid of the spiders and eggs. They also confirmed that the spiders were indeed brown widows, very common in the San Diego area. Despite the concerns, there were no reports of any children ever being bitten. 952

SAN DIEGO (KGTV) - When you book a flight, your base price may not represent the final bill due to mounting airline fees. As 10News examines ways to make it in San Diego, we have solutions for saving money on travel.It's not your imagination: fees are part of the way airlines do business."Instead of just one price for everything, it's now an a la carte menu," said AAA spokesman Allan Gundy.The hidden charges don't just apply to your luggage. Gundy says fees can climb for seat selection, reservation changes and cancellation, beverages, and in-flight wifi.RELATED: Making It in San Diego: Getting to paradise on points this summerBefore you book, consider investing in a refundable ticket if you believe changes are possible. Also, many airlines charge higher fees to cancel within 24 hours of a flight, so act quickly if you know your travel plans need to be altered, AARP reports.Remember to download movies or games before you fly or, if you must have wifi, Grundy says to "sign up for a monthly subscription service like gogo, which is what most of the major U.S. airlines use."Food prices are high on planes, but you can buy snacks to take through TSA checkpoints and pick up beverages after security.RELATED: Making It in San Diego: What to know about using Tijuana airport's Cross Border XpressGundy also recommends you don't book the cheapest flight you find online because it may not be that great of a deal."Look at what all the additional fees would amount to and look at the total ticket cost," said Grundy.As for cutting down or skipping those fees altogether, there are a few things you can do. "There are airline branded credit cards that as a perk may offer free luggage," advises Gundy. You can also dodge fees by reaching out to a travel agent to find the best deals. 1798

SAN DIEGO (KGTV) — While many holiday events will go on this season despite the pandemic, one San Diego tradition is taking a break this year.The San Diego Bay Parade of Lights, scheduled for Dec. 13 and 20, has been canceled this year. Organizers said the decision was made due to the rise in coronavirus cases."We are sad to announce that due to the rise in COVID-19 cases, this year’s San Diego Bay Parade of Lights is cancelled," a statement on the parade's website read. "We are disappointed that the parade cannot take place this year but we would like to do our part to minimize the spread of the virus. Wishing everyone a safe and happy holiday season. See you next year!"The parade, which was looking forward to its 49th year, routinely brings crowds of more than 100,000 San Diegans to the bay over two weekends to watch as nearly 100 boats sail through the bay, decked out in colorful lights and decorations."Our number one priority is safety and this year large crowds associated with the San Diego Bay Parade of Lights are not advisable due to the Covid-19 pandemic," said Parade Chairman Larry Baumann. "We know how much our residents and visitors love the parade and this was a very difficult decision. But in consulting with Port, City, County and State experts, canceling the parade was the right decision."Originally, the parade anticipated changes due to the pandemic, nixing the parade's awards dinner due to public health orders.San Diego County was put into California's purple reopening tier this month, the most restrictive, amid a surge in coronavirus cases across the state. 1608

SAN DIEGO (KGTV) – With Thanksgiving just days away, local health officials are seeing long lines at San Diego County COVID-19 test sites with many San Diegans hoping to get tested before the holiday.With the sudden surge of testing, some experts, such as UC San Diego Chief of Infectious Diseases Dr. Davey Smith, warn that getting a test is not enough to minimize the risk of spreading the coronavirus.“There’s a worrisome reason that people are planning to go visit their older relatives and they think they’re going to be 100 percent safe,” Smith said.Smith also said getting a test now could still give out a false negative result.“If I get tested now, it doesn't mean that I'm not infected, it just means that I'm not actively shedding the virus,” Smith told ABC 10News.On Monday, at San Diego International Airport, ABC 10News spoke to travelers who had the same thought.“I got tested about a week ago, just to make sure that everything is OK. And I know you can have it without having symptoms, so I did as much as I could to prepare before I came,” said Dana McLin.And along with getting a test, these travelers made sure they brought everything else they need to stay health while traveling this Thanksgiving holiday.Jan McLin said, “We are wearing our masks and we use hand sanitizers, sanitizing wipes, washing out hands constantly. This is necessary travel; when it’s necessary, you have to do everything not only for yourself but everyone around you as well.” 1481