Abstract
IntroductionRobinsoniella peoriensis was recently identified as a Gram-positive, spore-forming, anaerobic bacillus originally isolated from swine manure storage pits. Seven isolates have been subsequently reported from human sources.Case presentationWe report the case of an infection caused by R. peoriensis in a 45-year-old Caucasian woman after posterior instrumentation correction of idiopathic thoracolumbar scoliosis. The identification was made by culture of samples inoculated onto blood agar and chocolate agar and was confirmed by 16 S ribosomal ribonucleic acid gene sequencing.ConclusionsWe discuss similar cases suggesting that R. peoriensis is responsible for health care-associated infections with the colonic flora as a potential source of infection.
Highlights
Robinsoniella peoriensis was recently identified as a Gram-positive, spore-forming, anaerobic bacillus originally isolated from swine manure storage pits
We discuss similar cases suggesting that R. peoriensis is responsible for health care-associated infections with the colonic flora as a potential source of infection
To the best of our knowledge, the first case of neurosurgical infection caused by R. peoriensis and discuss similar cases suggesting that R. peoriensis is responsible for health care-associated infections
Summary
A microbiological survey of swine manure yielded unknown isolates of anaerobic, Gram-positive, non-motile, spore-forming, short oval to rod-shaped bacteria [1]. A radiograph showed right convex thoracolumbar scoliosis of 68° with a type IV pelvic obliquity graded according to the classification of King et al [6]. Her medical history revealed chronic urinary tract infections. PCR amplification and sequencing yielded a 1466-base pair (bp) 16 S rRNA gene sequence differing at only 10 nucleotide positions from that of reference R. peoriensis (GenBank AF445285; 99.3% sequence similarity) [2]. A 951-bp 16 S rRNA gene sequence obtained from two patients’ specimens as previously reported [8] differed at only three nucleotide positions (similarity of 99.6%) from that of R. peoriensis reference (GenBank AF445285). At one-year follow-up, radiographs showed a complete correction of the scoliotic deformity and no instrumentation failure
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