File - In this Aug. 28, 2019, file photo, a man exhales while smoking an e-cigarette in Portland, Maine. The U.S. government has refined how it is measuring an outbreak of breathing illnesses in people who vape, now counting only cases that are most closely linked to electronic cigarette use. Health officials on Thursday, Sept. 12, 2019 said 380 confirmed cases and probable cases have been reported in 36 states and one U.S. territory. (AP Photo/Robert F. Bukaty, File)
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