An unusual case of Streptococcus cristatus infection in a patient with decompensated liver disease | ||
| Microbes and Infectious Diseases | ||
| Volume 6, Issue 4, November 2025, Pages 6341-6346 PDF (885.46 K) | ||
| Document Type: Short Reports (case reports) | ||
| DOI: 10.21608/mid.2024.311215.2146 | ||
| Authors | ||
| Vimal Kumar Karnaker1; Asem Ali Ashraf* 1; Vinitha Thachil1; Sreelatha Shankaran Veetil2 | ||
| 1Nitte (Deemed to be University), KS Hegde Medical Academy (KSHEMA), Department of Microbiology, Mangalore, Karnataka, India | ||
| 2Nitte (Deemed to be University), AB Shetty Memorial Institute of Dental Sciences (ABSMIDS), Department of Oral Pathology, Mangalore, India | ||
| Abstract | ||
| Background: Cases of infections caused by Streptococcus cristatus, a member of the Mitis group within the Streptococcus genus and an important component of the oral microbiota, are quite rare. This study presents the first documented case of S. cristatus found in the ascitic fluid of a patient with decompensated liver disease. Methods: Ascitic fluid samples collected aseptically were inoculated into Brain Heart Infusion (BHI) broth (HiMedia, Mumbai, India) and incubated overnight at 35°C-37°C under optimal atmospheric conditions. After overnight incubation, the broth sample was then cultured on 5% sheep blood agar (HiMedia, Mumbai, India) and MacConkey agar plates (HiMedia, Mumbai, India) and incubated at 37°C for 18-24 hours. Results: Gram staining of the ascitic fluid sample revealed a few gram-positive cocci in pairs and chains. Significant growth of alpha-hemolytic colonies was observed and identified as Streptococcus cristatus using automated bacterial identification systems. Conclusion: Antimicrobial treatment was not initiated because the patient's family chose to forgo further clinical management. Effective treatment generally requires accurate identification of the bacterial isolate, appropriate and careful use of antibiotics, and patient education on the importance of oral hygiene. | ||
| Keywords | ||
| Antimicrobial susceptibility; Ascitic fluid; Infections; Liver Disease; Streptococcus | ||
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