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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) --  A price dispute between producers in Mexico and packing companies brought exports to a halt, leading to a shortage, according to Bloomberg.As a result of the dispute, growers stopped harvesting causing shipments to the U.S., Canada and Japan to be suspended.The conflict continued for several weeks as producers sought 84 to 99 cents a kilo.RELATED: Romaine lettuce warning: CDC urges people not to buy or eat it due to E. coli riskMexico is expected to produce about 2.05 million tons of the fruit in 2018, with roughly 60 percent shipped abroad.Production is expected to rise to 2.61 million tons by 2024. 646

SAN DIEGO (KGTV) -- With temperatures expected to soar into the 80s and 90s along San Diego's coast this weekend, lifeguards say they'll be extra vigilant at beaches and bays."We still want people to come and enjoy the beach," said San Diego Lifeguards Lt. Rich Stropky. "But come talk to us first; We will describe the do's and don'ts and any safety issues."In addition to the usual rip currents and stingrays, lifeguards say people need to be careful about over-exertion and heat-related illness like heat stroke or dehydration.Study: Longer and more frequent heatwaves expected for Southern California"Especially if you're at a beach like Torrey Pines, where you have to hike in or hike out," said Stropky. "So, bring lots of water. Hydrate often, not just when you're thirsty. And then stay cool, get some shade and make sure that sunscreen's on."Lifeguards also say they expect big crowds, which means swimmers and boaters will have to share the water.Tragedy struck last weekend when a Jet Ski and boat collided, killing one person. Stropky said everyone needs to have a heightened sense of awareness and keep their head on a swivel."It's very very dangerous," he said. "We've had several accidents. There's no reason for these things to be happening, except for lack of awareness."RELATED: Stretch of scorching heat begins in San Diego CountyAt boat and Jet Ski rental companies, like Action Sport Rentals on Mission Bay, staff are putting extra emphasis on safety as they send people onto the water.Action Sport Rental has people fill out safety forms, watch a video produced by the San Diego Police Department, and go through one-on-one safety training before they get on the boat."Most of the time, for people out on the bay, it's very hectic," said Action Sports Rentals Manager Alexes Pelzer. "Just make sure to learn the rules of the bay and look out for things floating in the water."STAYING COOL: San Diego County opens cool zones amid heat waveAnd while the air temperature could be too hot, Stropky warns the water temperature is still very cold. Measurements this week have been in the low to mid-60s, and he said anyone who has a wet suit should wear it in the water. 2194

SAN DIEGO (KGTV) — While the Friday night lights of high school football are dimmed for the time being, the same cannot be said for the pickleball courts in Del Cerro."There is nothing better than to play pickleball on a Friday night," says avid player Deanna McDonald.Some players decided to pick up the game after the pandemic hit, and found it to be so much fun. And while some sports and other physical activities have been limited, or put on hold due to COVID-19, pickleball has become a great alternative."When my gym closed, I was looking for something to do besides just walking around my neighborhood a few times, and get some exercise," says pickleball newcomer Noli Zosa.As for player Joe Arnold, he can't get enough pickleball."I suffer from what is called pickleball addictive disorder, and it really helps that a lot," Arnold joked.Prior to the pandemic, pickleball was exploding in popularity. From the young to the old, it's a sport that can be played at any age."The people who play are so nice, and you'll hear a lot of laughter in all the games," says Zosa.Now, when it comes to playing pickleball, there are no actual COVID rules, but these players do their best to keep the game as safe as possible."We sanitize the ball, and try to keep our social distance after each game. We just try to be smart." 1329

SAN DIEGO (KGTV) - The threat of a major lawsuit has led to several San Diego County cities changing how they are holding elections. As voters in those districts head to the polls or get their mail-in ballots, they will notice a big change in their options on who to vote for.15 jurisdictions in the county are switching from at-large elections to district elections. This means those jurisdictions have been carved up into districts. In those races voters will only be able to vote for someone who lives in that same district."It's going to create some confusion at the ballot box," Encinitas City Councilmember Tony Kranz told 10News. "You're going to wonder why you can't vote for some of those folks."Encinitas made the change for 2018, along with Carlsbad, El Cajon, Oceanside, Poway, San Marcos, Santee and Vista. School Districts using the new voting system are Cajon Valley Union, Carlsbad Unified, Oceanside Unified, Poway Unified, San Dieguito Union High School, and San Marcos Unified.In most cases, the change is a response to a threatened lawsuit. Attorney Kevin Shenkman, who works in Malibu, has threatened lawsuits challenging the legality of at-large elections across California. He says at-large elections are a violation of California's Voter's Rights Act of 2001."It's just a fundamentally unfair election system that freezes out minorities," Shenkman told 10News.Shenkman says at-large elections make it easier for the majority, even a slim majority, to take full control city councils, school boards, and other elected bodies. He says studies have shown that leaves minority groups without a voice.In an interview with 10News, he pointed out examples, including a claim that Hispanic voters did not have enough representation in Encintas, and a claim that voters in the southern portion of Poway have disproportionally less power than those in other parts of Poway."District elections are just a more fair system," Shenkman says. 1974