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VIENNA — Austrian authorities say at least one gunman, shooting apparently at random in a popular Vienna nightlife area hours before a coronavirus lockdown took effect, killed four people in an Islamic extremist attack. They said Tuesday that the suspect, who was shot and killed by police, was a young Austrian-North Macedonian dual citizen who had a previous terror conviction for attempting to join the Islamic State extremist group in Syria.Chancellor Sebastian Kurz said two men and two women died from their injuries in the attack Monday evening. He said a police officer who tried to get in the attacker’s way was shot and wounded, and another 14 people were hurt. Police have arrested several other people and searched 15 houses and apartments 759

Visitors to the Bahamas will no longer have to quarantine for 14 days after the island updated its coronavirus rules over the weekend.On Sunday, the island stated in a press release that anyone who visits must test negative for COVID-19 five days before arriving on the island, apply for a health travel visa, complete a daily questionnaire, and take a rapid antigen test the fifth day of your stay.The antigen test is not required if you are leaving on the fifth day.And you're required to wear a mask and social distance in public places.Beginning Nov. 14, visitors must opt into COVID-19 health insurance when applying for the health travel visas."The cost of the required COVID Health Insurance is included in the Bahamas Health Visa and paid in advance of travel," island officials stated on its FAQ.The island said anyone who presents a test older than five days would not be allowed entry.Prior to the rules change on Sunday, visitors had to quarantine for 14 days upon their arrival as part of its vacation-in-place. 1032

WASHINGTON — President Donald Trump is shaking up his campaign amid sinking poll numbers, replacing campaign manager Brad Parscale with veteran GOP operative Bill Stepien.Trump and Parscale’s relationship had been strained since a Tulsa, Oklahoma, rally that drew a dismal crowd, infuriating the president.Parscale was a political novice when he ran Trump's digital advertising in 2016 and was credited with helping bring about his surprise victory.Stepien has been in politics for years, working for former New Jersey Gov. Chris Christie and serving as Trump's national field director in 2016.In a Facebook post, Trump said that Parscale would remain on the campaign as a senior advisor focused on digital and data strategies. 736

WASHINGTON (AP) — A major union representing U.S. postal workers endorsed Democrat Joe Biden, a move that comes after President Donald Trump acknowledged he was starving the postal service of money in order to make it more difficult to vote by mail in November’s election. The National Association of Letter Carriers, which represents 300,000 current and retired workers, said Thursday that Trump's longstanding hostility to the mail-delivering agency has heightened during the pandemic. They say his administration has taken “steps outside of the public eye to undermine the Postal Service and letter carriers." Union president Fredric Rolando said Biden is a "fierce ally and defender of the United States Postal Service." 732

WASHINGTON — U.S. health officials have started two new studies to test various blood thinners to try to prevent strokes, heart attacks, blood clots and other complications in COVID-19 patients.Doctors increasingly are finding blood clots throughout the bodies of many people who died from COVID-19 along with signs of damage they do to kidneys, lungs, blood vessels, the heart and other organs.National Heart, Lung and Blood Institute Director Gary Gibbons says that hospitals have been giving seriously ill patients anti-clotting drugs to try to prevent this, but “quite frankly, we didn’t know how best to treat it” in terms of which drugs or doses to use and at what stage of illness.The National Institutes of Health will coordinate a study in hospitalized patients comparing low and regular doses of the blood thinner heparin. The study will involve more than 100 sites around the world participating in a research effort with various governments, drug companies, universities and others to speed coronavirus therapies.A second study in COVID-19 patients not sick enough to need hospitalization will test various strategies against placebo pills: baby aspirin or low or regular doses of the anti-clotting drug apixaban, sold as Eliquis in the United States. The goal there is preventing blood clots or hospitalization.A third study starting later will test blood thinners for people who have recovered and no longer test positive for the coronavirus. Evidence is building that they may remain at higher risk for blood clots. 1538