biostudies-literatureUnknown21(4)Zhang WEmerging infectious diseases715-8https://www.ebi.ac.uk/biostudies/studies/S-EPMC4378472biostudies-literatureCo-infection with Avian (H7N9) and Pandemic (H1N1) 2009 Influenza Viruses, China.PMC4378472Xu LZhu ZHu YHe JTian DZhu DZhang WLiu YWang WShan SRen TTeng ZYuan ZfalseCo-infection with Avian (H7N9) and Pandemic (H1N1) 2009 Influenza Viruses, China.2015-01-01T00:00:00Z2015 Apr2022-02-11T15:42:55.508Z2022-02-11T15:42:55.508ZS-EPMC43784722581110710.3201/eid2104.141560