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Volume 17, Number 11—November 2011


Fatal Infectious Diseases during Pandemic (H1N1) 2009 Outbreak

Dianna M. BlauComments to Author , Amy M. Denison, Julu Bhatnagar, Marlene DeLeon-Carnes, Clifton Drew, Christopher D. Paddock, Wun-Ju Shieh, Sherif R. Zaki, and Infectious Diseases Pathology Branch Working Group
Author affiliations: Centers for Disease Control and Prevention, Atlanta, GA, USA

Main Article


Infectious agents identified in tissue samples from case-patients without pandemic (H1N1) 2009 virus infection, United States, 2009

Agent No. case-patients*
Bacterial 44
Staphylococcus aureus 14
Streptococcus pneumoniae 14
Streptococcus pyogenes 4
Streptococcus viridans group 4
Leptospira spp. 2
Clostridium perfringens 1
Capnocytophaga canimorsus 1
Haemophilus influenzae 1
Legionella spp. 1
Neisseria meningitidis 1
Pseudomonas spp. 1
Rickettsia rickettsii 1
Streptococcus agalactiae 1
Viral 25
Influenza A, unsubtypeable† 10
Influenza A, seasonal (H1/H3) 6
Respiratory syncytial virus 3
Dengue virus 2
Enterovirus 2
Adenovirus 1
Human herpes virus 1 1
Fungal 2
Aspergillus spp. 2
Candida spp. 2

*For some case-patients, multiple agents were detected.
†Subtype not determined by 2 assays, including 1 specific for pandemic (H1N1) 2009 (2).

Main Article

1Infectious Diseases Pathology Branch Working Group members were Patty Adem, Jeanine Bartlett, Brigid Batten, Reema Dedania, Amy Green, Pat Greer, Tara Jones, Lindy Liu, Jeltley Montague, Mitesh Patel, Dominique Rollin, Chalanda Smith, and Libby White.