Walgreens

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Walgreens is now offering flu shots for everyone ages 3 and up by walk-in or appointment at more than 9,000 store locations nationwide to help protect communities from vaccine-preventable illnesses such as influenza. (Photo: Business Wire)

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In downtown Washington, D.C., on Wednesday, Jan. 10, activists from the anti-smoking campaign Truth Initiative dressed up as zombies to protest against pharmacy giant Walgreens for continuing to sell tobacco products in its stores. (Laura Kelly/The Washington Times)

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An empty parking lot is the first sign a local Walgreens remains closed Wednesday, Aug. 2, 2017, in Phoenix, after a customer at the drugstore shot and killed a man who was attempting to rob the pharmacy Tuesday night, according to police. (AP Photo/Ross D. Franklin)

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A local Walgreens remains closed Wednesday, Aug. 2, 2017, in Phoenix, after a customer at the drugstore shot and killed a man who was attempting to rob the pharmacy Tuesday night, according to police. (AP Photo/Ross D. Franklin)

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Signs posted at the entrance of a local Walgreens let possible customers know that the store remains closed Wednesday, Aug. 2, 2017, in Phoenix, after a customer at the drugstore shot and killed a man who was attempting to rob the pharmacy Tuesday night, according to police. (AP Photo/Ross D. Franklin)

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FILE - This Friday, Oct. 21, 2016, file photo, shows a Rite Aid location in Philadelphia. Walgreens ended its takeover pursuit of rival Rite Aid following resistance from U.S. regulators and will instead now buy stores, distribution centers and inventory in a new deal. (AP Photo/Matt Rourke, File)

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This Tuesday, July 5, 2016, file photo shows a Walgreens drugstore in North Andover, Mass. Walgreens will replace General Electric on the Dow Jones Industrial Average before the open of trading on the morning of June 26, 2018. (AP Photo/Elise Amendola, File)

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Walgreen's pharmacy manager Sarah Freedman stands June 26, 2012, in her store in Washington. The Centers for Disease Control and Prevention on Tuesday announced a $1.2 million pilot project to offer free rapid HIV tests at pharmacies and clinics in 24 cities and rural communities. (Associated Press)