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BACKGROUND Influenza B virus infection causes rates of hospitalization and influenza-associated pneumonia similar to seasonal influenza A virus infection and accounts for a substantial percentage of all influenza-related hospitalizations and deaths among those aged <18 years; however, the pathogenesis of fatal influenza B virus infection is poorly… (More)
The Phylum Microsporidia comprises >1,200 species, only 15 of which are known to infect humans, including the genera Trachipleistophora, Pleistophora, and Brachiola. We report an infection by Tubulinosema sp. in an immunosuppressed patient.
Clostridium sordellii and Clostridium perfringens are infrequent human pathogens; however, the case-fatality rates for the infections are very high, particularly in obstetric C. sordellii infections (>90%). Deaths from Clostridium sordellii and Clostridium perfringens toxic shock (CTS) are sudden, and diagnosis is often challenging. Formalin-fixed,… (More)
To the Editor: Nonpandemic infectious diseases occur with usual incidence during pandemics even though clinical attention is often on the pandemic pathogen. Many of these other infectious diseases share similar clinical signs and symptoms and are sometimes fatal. During the outbreak of pandemic (H1N1) 2009, tissue specimens from case-patients with… (More)