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. 2017 Aug;23(8):1355–1359. doi: 10.3201/eid2308.170640

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Human infections with HPAI or LPAI A(H7N9) viruses, by illness onset date, China, September 1, 2016–March 31, 2017. A) Dates of illness onset for the 8 HPAI A(H7N9) cases compared with those for all LPAI A(H7N9) cases. B) Dates of illness onset for the 8 HPAI A(H7N9) cases compared with those for LPAI A(H7N9) cases in 3 provinces (Guangxi, Guangdong, and Hunan).