Influenza Outbreaks during World Youth Day 2008 Mass GatheringResearch Published on 2010-05-012023-06-08 Journal: Emerging Infectious Diseases [Category] Fulltext, 신종인플루엔자, [키워드] Influenza Mass gatherings outbreak Research [DOI] 10.3201/eid1605.091136 PMC 바로가기 [Article Type] Research