Pyogenic sacroiliitis due to Veillonella parvula

Acromioclavicular Septic Arthritis Caused by Veillonella parvula

We hereby report the case of a primary acromioclavicular septic arthritis caused by Veillonella parvula. This bacteria is rare as a pathogen but is well known as a commensal of the lungs, vagina, mouth, and gastrointestinal tract of humans. However, it may turn as an opportunistic pathogen. It was isolated in blood culture and confirmed in biopsy specimen. The patient had complete recovery after surgical washout with second look at postoperative day two and targeted antibiotic treatment.

Osteomyelitis caused by Veillonella species: Case report and review of the literature

Previously, Veillonella species had been considered as nonpathogenic and rarely caused serious infections. We report a case of 25-year-old man with osteomyelitis caused by Veillonella species. He was admitted to the hospital due to an open fracture to the left radial bone caused by industrial washing machine accident, and emergency surgery was performed. However, wound infections occurred one week after the operation. Although Acinetobacter baumannii and Serratia marcescens were cultured from the pus, obligate anaerobic bacteria were not detected at that point. Debridement was repeated and antibiotics were changed according to the result of bacterial culture and drug sensitivity. Despite this, the infection was poorly controlled. On the 5th debridement, granulomatous bone tissues on pseudarthrosis were found for the first time at the infection site. Although no bacteria was detected with aerobic culture, anaerobic incubation revealed Gram-negative cocci which was later identified as Veillonella species by 16S rRNA gene sequence analysis. His condition improved without any additional debridement after adding effective antibiotics against Veillonella species. It is well known that prolonged infection with aerobes consumes oxygen in the infection site and leads the environment to more favorable conditions for anaerobic bacteria, thus we speculated that prolonged infection with bacteria such as S. marcescens induced the favorable environment for Veillonella species. Physicians should realize the importance of anaerobic culture method in routine practice, especially in complicated cases such as the present case. In this article, we reviewed case reports of Veillonella infection and summarized the clinical features of this organism.

Acute pyelonephritis and secondary bacteraemia caused by Veillonella during pregnancy

We report a case of pyelonephritis and secondary bacteraemia caused by Veillonella species during pregnancy. Veillonella is part of the normal flora from the oral cavity, gut and vagina. However, because Veillonella is usually isolated from cultures of clinical specimens as part of commensal flora, it is frequently regarded as a contaminant. In the present case, Veillonella was isolated from the patient's urine and blood samples that showed evidence of pyelonephritis and secondary bacteraemia. We found that ureteral stenting is an extremely effective therapeutic option for pregnant woman with hydronephrosis and clear signs and symptoms of urosepsis.