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UPDATE 2 p.m., Apr. 18: Lifeguards removed the shark advisory signs at Silver Strand.SAN DIEGO (KGTV) -- Lifeguards warned beachgoers in Silver Strand after several agencies spotted a shark they say could be a great white off the coast Wednesday. According to authorities, the shark was initially spotted by Border Patrol agents in a helicopter above Imperial Beach around 10:30 a.m. The shark was also spotted by a lifeguard in a boat approximately two miles off the coast of Imperial Beach. RELATED: New shark detecting technology being testedThe shark is believed to be between seven and eight foot long. Lifeguards in Imperial Beach say they believe the shark could be a great white. The shark was again seen about half a mile off the coast of Silver Strand, prompting lifeguards to warn beachgoers. Lifeguards chose not to issue a formal public warning because the shark was of moderate size, wasn't behaving aggressively and was in an area with few people nearby, City News Service reports. RELATED: Great white shark attacked 13-year-old boy off Beacon's Beach in EncinitasThe sighting comes less than a year after a 13-year-old boy was attacked by a shark while lobster diving off the coast of Encinitas in September of 2018. Researchers later confirmed that the shark that attacked Keane Hayes was a great white. 1330

UPDATE (9:50 P.M. FRIDAY): Deputy Richard Fischer posted the million bail Friday night. For more information, contact the San Diego County Sheriff's Department. The telephone number is (619) 615-2818. ___ 225

Vaping is being linked to an increased risk of Covid-19 among teenagers and young adults, according to a new study.Researchers at Stanford University School of Medicine looked at connections between youth vaping and Covid-19 cases in the U.S. They analyzed online surveys conducted in May by 4,351 people between the ages of 13 and 24.Among teens and young adults who took a coronavirus test, those who vaped were five to seven times more likely to test positive.“Teens and young adults need to know that if you use e-cigarettes, you are likely at immediate risk of COVID-19 because you are damaging your lungs,” said the study’s senior author, Bonnie Halpern-Felsher, PhD, professor of pediatrics.The participants were evenly divided between those who had used e-cigarettes and those who had never used nicotine products.Participants who admitted to using both cigarettes and e-cigarettes in the previous 30 days were almost five times as likely to have Covid-19 symptoms, including coughing, fever, tiredness and difficulty breathing, compared to those who never smoked or vaped.Young people who vaped or smoked, or both, were about two to nine times more likely to receive COVID-19 tests than nonusers.Among those surveyed who had taken a Covid-19 test, those who had used both e-cigarettes and cigarettes in the previous 30 days were 6.8 times more likely to test positive for the coronavirus.“This study tells us pretty clearly that youth who are using vapes or are dual-using [e-cigarettes and cigarettes] are at elevated risk, and it’s not just a small increase in risk; it’s a big one,” said the study’s lead author, postdoctoral scholar Shivani Mathur Gaiha, PhD.Researchers hope their study will be a warning about the dangers of vaping, and also prompt the Food and Drug Administration to consider tighter regulations on vaping products. 1856

Twenty Republican senators are urging FDA Commissioner Stephen Hahn to declare a commonly used abortion pill as an "imminent hazard to the public health," a designation that would ban the drug in the U.S. and conceivably limit abortions across the country.In a letter published on the website of Sen. Ted Cruz, R-Texas, the lawmakers ask Hahn to ban Mifeprex, and its generic counterpart, mifepristone. In their letter, the senators say the drug "should never have been approved."The request comes amid a court battle over laws that require women to pick up the pill in person, even if they had already consulted with a doctor.Despite the COVID-19 pandemic, the Trump administration chose to keep those requirements in place. In May, the ACLU sued, arguing that the laws placed an undue burden on women seeking a legal right to an abortion during the pandemic. In July, a Maryland judge sided with the ACLU, granting their request for a preliminary injunction that would allow the drug to be delivered through the mail during the pandemic.According to the ACLU's lawsuit, mifepristone is the only drug in a list of 20,000 FDA-approved drugs that require doctors to distribute in person but can be taken while not in the care of a doctor.The senators' letter claims that it is "unconscionable" that the drug is currently being prescribed without blood tests, ultrasounds and that doing so could lead to hemorrhaging and death. They also claim that without in-person requirements, women "will be left to engage in the form of "DIY" chemical abortion."However, according to a 2018 report from the National Academies of Sciences, Engineering and Medicine, complications from using abortions pills are "rare" and only occur in a "fraction" of patients. Studies have also shown that women often turn to dangerous "DIY" abortions if they don't have access to legal abortions.The ACLU's lawsuit said that 4 million women in the U.S. have used mifepristone, and that the drug accounted for nearly 40% of all abortions in 2017. 2025

Tropical Storm Beta is gaining strength off the coast of southern Texas, as Subtropical Storm Alpha makes landfall in Portugal Friday afternoon; both are making history because of their names and timing.This is only the second time in recent history more than 21 significant storms in the Atlantic have been named in a year. Tropical Storm Beta is number 23.The National Hurricane Center uses a list of 21 names each year to distinguish large storms they are tracking in the Atlantic Ocean. Once those names are all used, scientists use the Greek alphabet to name storms. 579