Molecular epidemiology of clinical carbapenem-resistant 'Acinetobacter baumannii-calcoaceticus' complex isolates in tertiary care hospitals in Java and Sulawesi Islands, Indonesia

• Published in: Tropical medicine and infectious disease Vol. 7; no. 10; pp. 1 - 12
• Main Authors: Homenta, Heriyannis, Julyadharma, Julyadharma, Susianti, Hani, Noorhamdani, Noorhamdani, Santosaningsih, Dewi
• Format: Journal Article
• Language: English
• Published: Basel, Switzerland MDPI 30.09.2022; MDPI AG
• Subjects: A. baumannii-calcoaceticus complex; Antibiotics; Bacteria; carbapenem resistant; Cloning; Drug resistance in microorganisms; Effectiveness; Enzymes; Epidemics; Epidemiology; Hospitals; Indonesia; Intensive care; Methodology; Molecular aspects; Molecular epidemiology; Multidrug resistant organisms; Nosocomial infections; Pathogens; Phylogenetics; Phylogeny; Pneumonia; RNA polymerase; Urinary tract diseases; Urinary tract infections; Urogenital system; France; United States > US; Sulawesi; Indonesia
• ISSN: 2414-6366; 2414-6366
• DOI: 10.3390/tropicalmed7100277

Carbapenem-resistant 'Acinetobacter baumannii (A. baumannii)-calcoaceticus' complex (CRAb- cc) is an important pathogen causing nosocomial infections worldwide; however, molecular epi- demiology of the 'A. baumannii-calcoaceticus' complex in Indonesian hospitals is scarce. This study aimed to determine the clonal relatedness of CRAb-cc in two tertiary care hospitals in Malang and Manado in Indonesia. The CRAb-cc isolates from routine clinical cultures in two tertiary care hospi- tals in Malang and Manado were identified using the Vitek2 system (bioMerieux, Lyon, France). Multi-locus variable-number tandem-repeat analysis (MLVA) typing, multi-locus sequence typing (MLST), clonal complex (CC), and phylogenetic tree analysis were conducted for a subset of isolates. Seventy-three CRAb-cc isolates were collected. The CRAb-cc isolates were frequently found among lower-respiratory-tract specimens. We detected the MLVA type (MT) 1, MT3, and MT4 CRAB-cc isolates belonging to the sequence type (ST) 642, and CC1 was the predominant clone in this study. In conclusion, we identified the clonal relatedness of 'A. baumannii-calcoaceticus' complex isolates in two tertiary care hospitals in Malang and Manado in Indonesia. Further study is required to investigate the clinical importance and distribution of ST642 in Indonesian hospitals for developing prevention and control measures.