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Abstract
Case Report
A case of Streptococcus oralis, Granulicatella adiacens, aspiration pneumonia and bacteremia with positive pneumococcal urinary antigen
Masaki Nakanishia,b Yumiko Fujitomob Toru Inabab Naohisa Fujitaa,b Yukiji Yamadaa,b Tomoko Ieharaa,c
aDepartment of Infection Control, Kyoto Prefectural University of Medicine
bDepartment of Clinical Laboratory, Kyoto Prefectural University of Medicine
cDepartment of Pediatrics, Kyoto Prefectural University of Medicine
ABSTRACT
The patient was a 39-year-old man, who was admitted to our hospital for pneumonia. Ceftriaxone (CTRX) was prescribed as the initial treatment because of the positive result of pneumococcal urinary antigen. However, Streptococcus oralis and Granulicatella adiacens were isolated in blood culture. Therefore we continued to prescribe CTRX, resulting in good clinical course. This case was considered to be aspiration pneumonia and bacteremia caused by S. oralis and G. adiacens, but the cause of the positive result of pneumococcal urinary antigen would be that S. oralis has antigen-like C-polysaccharide, which Streptococcus pneumonia has. It is necessary in aspiration pneumonia patients to take consider that the positive result of pneumococcal urinary antigen might be caused by false-positive for S. oralis infection.
KEYWORDS
Pneumococcal urinary antigen False-positive Aspiration pneumonia Streptococcus oralis
Received 10 Jul 2013 ／ Accepted 25 Sep 2013
AJRS, 3(1): 133-136, 2014
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