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Lutchminarain K, Kajee A, Gandhi NR, Han KSS, Mvelase N. Performance of the GenoType MTBDR sl in a programmatic setting, South Africa. Int J Tuberc Lung Dis 2022; 26:426-432. [PMID: 35505490 DOI: 10.5588/ijtld.21.0590] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND: The GenoType MTBDRsl v2 is a molecular test designed for the rapid detection of resistance to second-line anti-TB drugs in Mycobacterium tuberculosis complex (MTBC).OBJECTIVE: To assess the use of MTBDRsl in a programmatic setting and to describe the resistance patterns in a high HIV-TB-endemic area in South Africa.METHODS: We performed a retrospective data analysis of all MTBDRsl results in patients with newly diagnosed rifampicin-resistant TB (RR-TB). We compared its performance on direct testing of smear-positive and smear-negative specimens. Results were examined to observe the detected resistance-conferring mutations.RESULTS: Of 1873 RR-TB/multidrug-resistant TB (MDR-TB), 37.4% were smear-negative and 62.5% were smear-positive. Among smear-negative specimens, the MTBDRsl showed an inconclusive rate of 61.2%, while the inconclusive rate from smear-positive specimens was 6.6%. The most common mutation observed in case of fluoroquinolone resistance occurred at the gyrA gene, codon 90 (A90V) (61/158, 38.6%), and the most common mutation in injectable aminoglycoside resistance occurred in the rrs region, A1401G (71/108, 65.7%).CONCLUSION: In HIV-TB-prevalent settings, routine use of the MTBDRsl is more effective when performed directly on smear-positive specimens. In view of currently used injectable-free regimens, this test requires revision.
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Affiliation(s)
- K Lutchminarain
- National Health Laboratory Service, Durban, South Africa, University of KwaZulu Natal, Durban, South Africa
| | - A Kajee
- National Health Laboratory Service, Durban, South Africa, University of KwaZulu Natal, Durban, South Africa
| | - N R Gandhi
- Emory University Rollins School of Public Health, Atlanta, GA, Emory University School of Medicine, Atlanta, GA, USA
| | - K S S Han
- National Health Laboratory Service, Durban, South Africa, University of KwaZulu Natal, Durban, South Africa
| | - N Mvelase
- National Health Laboratory Service, Durban, South Africa, University of KwaZulu Natal, Durban, South Africa
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Naranbhai N, A. Singh R, Moodley B, Han KSS, Archary M, Mvelase N. Case Report: Human Bertiellosis-A Rare Cestode Infection in a South African Child. Am J Trop Med Hyg 2022; 106:219-221. [PMID: 34695801 PMCID: PMC8733509 DOI: 10.4269/ajtmh.21-0204] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2021] [Accepted: 08/24/2021] [Indexed: 01/03/2023] Open
Abstract
Cestodes of Bertiella genus are parasites of nonhuman primates. We describe a rare case of human bertiellosis in South Africa: a 3-year-old girl with a 1-year history of rectal proglottid discharge and intermittent abdominal pain. After repeated failure with benzimidazole antihelminthic treatment, praziquantel proved successful.
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Affiliation(s)
- Nitesh Naranbhai
- South African Military Health Service, AMHU NC HQ, Department of Defence, South Africa;,Address correspondence to Nitesh Naranbhai, South African Military Health Service, AMHU NC HQ, Department of Defence, Florence St., Diskobolos, Kimberley, Northern Cape, South Africa 8301. E-mail:
| | - Rochelle A. Singh
- Inkosi Albert Luthuli Central Hospital Academic Complex, Kwa-Zulu Natal, South Africa
| | - Bhavani Moodley
- Centre for Emerging Zoonotic and Parasitic Infections, National Institute for Communicable Diseases, Division of the National Health Laboratory Service, Johannesburg, South Africa
| | - Khine Swe Swe Han
- Department of Medical Microbiology, National Health Laboratory Service, Durban, South Africa;,School of Laboratory Medicine and Medical Sciences, College of Health Sciences, University of KwaZulu-Natal, Durban, South Africa
| | | | - Nomonde Mvelase
- Department of Medical Microbiology, National Health Laboratory Service, Durban, South Africa;,School of Laboratory Medicine and Medical Sciences, College of Health Sciences, University of KwaZulu-Natal, Durban, South Africa
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Ramsamy Y, Mlisana KP, Allam M, Amoako DG, Abia ALK, Ismail A, Singh R, Kisten T, Swe Han KS, Muckart DJJ, Hardcastle T, Suleman M, Essack SY. Genomic Analysis of Carbapenemase -Producing Extensively Drug-Resistant Klebsiella pneumoniae Isolates Reveals the Horizontal Spread of p18-43_01 Plasmid Encoding blaNDM-1 in South Africa. Microorganisms 2020; 8:microorganisms8010137. [PMID: 31963608 PMCID: PMC7023316 DOI: 10.3390/microorganisms8010137] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2019] [Revised: 01/11/2020] [Accepted: 01/17/2020] [Indexed: 12/12/2022] Open
Abstract
Whole-genome sequence (WGS) analyses were employed to investigate the genomic epidemiology of extensively drug-resistant Klebsiella pneumoniae strains, focusing on the carbapenem resistance-encoding determinants, mobile genetic support, clonal and epidemiological relationships. A total of ten isolates were obtained from patients admitted to the intensive care unit (ICU) in a public hospital in South Africa. Five isolates were from rectal swabs of colonized patients and five from blood cultures of patients with invasive carbapenem-resistant infections. Following microbial identification and antibiotic susceptibility tests, the isolates were subjected to WGS on the Illumina MiSeq platform. All the isolates showed genotypic resistance to tested β-lactams (NDM-1, OXA-1, CTX-M-15, TEM-1B, SHV-1) and other antibiotics. All but one isolate belonged to the ST152 with a novel sequence type, ST3136, differing by a single-locus variant. The isolates had the same plasmid multilocus sequence type (IncF[K12:A-:B36]) and capsular serotype (KL149), supporting the epidemiological linkage between the clones. Resistance to carbapenems in the 10 isolates was conferred by the blaNDM-1 mediated by the acquisition of multi-replicon [ColRNAI, IncFIB(pB171), Col440I, IncFII, IncFIB(K) and IncFII(Yp)] p18-43_01 plasmid. These findings suggest that the acquisition of blaNDM-1-bearing plasmid structure (p18-43_01), horizontal transfer and clonal dissemination facilitate the spread of carbapenemases in South Africa. This emphasizes the importance of targeted infection control measures to prevent dissemination.
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Affiliation(s)
- Yogandree Ramsamy
- Antimicrobial Research Unit, College of Health Sciences, University of KwaZulu-Natal, Durban 4000, South Africa; (A.L.K.A.); (S.Y.E.)
- Medical Microbiology, National Health Laboratory Services, Durban 4000, South Africa; (K.P.M.); (R.S.)
- Medical Microbiology, College of Health Sciences, University of KwaZulu-Natal, Durban 4000, South Africa
- Correspondence: (Y.R.); (D.G.A.)
| | - Koleka P. Mlisana
- Medical Microbiology, National Health Laboratory Services, Durban 4000, South Africa; (K.P.M.); (R.S.)
- Medical Microbiology, College of Health Sciences, University of KwaZulu-Natal, Durban 4000, South Africa
| | - Mushal Allam
- Sequencing Core Facility, National Institute for Communicable Diseases, National Health Laboratory Service, Johannesburg 2131, South Africa; (M.A.); (A.I.)
| | - Daniel G. Amoako
- Antimicrobial Research Unit, College of Health Sciences, University of KwaZulu-Natal, Durban 4000, South Africa; (A.L.K.A.); (S.Y.E.)
- Correspondence: (Y.R.); (D.G.A.)
| | - Akebe L. K. Abia
- Antimicrobial Research Unit, College of Health Sciences, University of KwaZulu-Natal, Durban 4000, South Africa; (A.L.K.A.); (S.Y.E.)
| | - Arshad Ismail
- Sequencing Core Facility, National Institute for Communicable Diseases, National Health Laboratory Service, Johannesburg 2131, South Africa; (M.A.); (A.I.)
| | - Ravesh Singh
- Medical Microbiology, National Health Laboratory Services, Durban 4000, South Africa; (K.P.M.); (R.S.)
- Medical Microbiology, College of Health Sciences, University of KwaZulu-Natal, Durban 4000, South Africa
| | - Theroshnie Kisten
- School of Clinical Medicine, Discipline of Anaesthetics & Critical Care, College of Health Sciences, University of KwaZulu-Natal, Durban 4000, South Africa;
- Inkosi Albert Luthuli Central Hospital, Department of Critical Care, College of Health Sciences, University of KwaZulu-Natal, Durban 4000, South Africa
| | - Khine Swe Swe Han
- Medical Microbiology, National Health Laboratory Services, Durban 4000, South Africa; (K.P.M.); (R.S.)
- Medical Microbiology, College of Health Sciences, University of KwaZulu-Natal, Durban 4000, South Africa
| | - David J. Jackson Muckart
- Inkosi Albert Luthuli Central Hospital, Department of Surgery & Trauma Unit, College of Health Sciences, University of KwaZulu-Natal, Durban 4000, South Africa; (D.J.J.M.); (T.H.)
| | - Timothy Hardcastle
- Inkosi Albert Luthuli Central Hospital, Department of Surgery & Trauma Unit, College of Health Sciences, University of KwaZulu-Natal, Durban 4000, South Africa; (D.J.J.M.); (T.H.)
| | - Moosa Suleman
- Ahmed Al-Kadi Private Hospital, Durban 4000, South Africa;
| | - Sabiha Y. Essack
- Antimicrobial Research Unit, College of Health Sciences, University of KwaZulu-Natal, Durban 4000, South Africa; (A.L.K.A.); (S.Y.E.)
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Nana T, Moore C, Boyles T, Brink AJ, Cleghorn J, Devenish LM, du Toit B, Fredericks ES, Lekalakala-Mokaba MR, Maluleka C, Rajabally MN, Reubenson G, Shuping L, Swart K, Swe Han KS, Wadula J, Wojno J, Lowman W. South African Society of Clinical Microbiology Clostridioides difficile infection diagnosis, management and infection prevention and control guideline. S Afr J Infect Dis 2020; 35:219. [PMID: 34485483 PMCID: PMC8378053 DOI: 10.4102/sajid.v35i1.219] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2020] [Accepted: 06/24/2020] [Indexed: 12/17/2022] Open
Abstract
Clostridioides difficile infection (CDI) is a problem in both developed and developing countries and is a common hospital-acquired infection. This guideline provides evidence-based practical recommendations for South Africa and other developing countries. The scope of the guideline includes CDI diagnostic approaches; adult, paediatric and special populations treatment options; and surveillance and infection prevention and control recommendations.
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Affiliation(s)
- Trusha Nana
- Department of Clinical Microbiology and Infectious Diseases, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa
- Charlotte Maxeke Johannesburg Academic Hospital Microbiology Laboratory, National Health Laboratory Services, Johannesburg, South Africa
| | | | - Tom Boyles
- Department of Medicine, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa
- Department of Infectious and Tropical Diseases, London School of Hygiene and Tropical Medicine, London, United Kingdom
| | - Adrian J. Brink
- Department of Medical Microbiology, Faculty of Health Sciences, University of Cape Town, Cape Town, South Africa
| | - Joy Cleghorn
- Life Healthcare Group, Johannesburg, South Africa
| | - Lesley M. Devenish
- Department of Clinical Microbiology and Infectious Diseases, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa
- Infection Control Services Laboratory, National Health Laboratory Services, Johannesburg, South Africa
| | | | - Ernst S. Fredericks
- Department of Physiology, Faculty of Science, Nelson Mandela University, Port Elizabeth, South Africa
| | - Molebogeng R. Lekalakala-Mokaba
- Department of Microbiology, Faculty of Health Sciences, Sefako Makgatho Health Sciences University, Pretoria, South Africa
- Dr George Mukhari Academic Hospital Microbiology Laboratory, National Health Laboratory Services, Pretoria, South Africa
| | - Caroline Maluleka
- Department of Microbiology, Faculty of Health Sciences, Sefako Makgatho Health Sciences University, Pretoria, South Africa
- Dr George Mukhari Academic Hospital Microbiology Laboratory, National Health Laboratory Services, Pretoria, South Africa
| | | | - Gary Reubenson
- Department of Paediatrics and Child Health, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa
| | - Liliwe Shuping
- Centre for Healthcare-Associated Infections, National Institute for Communicable Diseases, a division of National Health Laboratory Service, Johannesburg, South Africa
| | - Karin Swart
- Netcare Hospitals Limited, Johannesburg, South Africa
| | - Khine Swe Swe Han
- Medical Microbiology Department, Inkosi Albert Luthuli Central Hospital Academic Complex, National Health Laboratory Services, Durban, South Africa
- Department of Medical Microbiology, School of Laboratory Medicine and Medical Sciences, University of KwaZulu-Natal, Durban, South Africa
| | - Jeannette Wadula
- Department of Clinical Microbiology and Infectious Diseases, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa
- Chris Hani Baragwanath Hospital Microbiology Laboratory, National Health Laboratory Services, Johannesburg, South Africa
| | | | - Warren Lowman
- Department of Clinical Microbiology and Infectious Diseases, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa
- Department of Clinical Microbiology, PathCare/Vermaak Pathologists, Johannesburg, South Africa
- Department of Clinical Microbiology and Infection Prevention and Control, WITS Donald Gordon Medical Centre, Johannesburg, South Africa
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Singh-Moodley A, Duse A, Naicker P, Kularatne R, Nana T, Lekalakala R, Mbelle N, Dawood H, Swe Swe Han K, Ramjathan P, Bhola P, Whitelaw A, Perovic O. Laboratory based antimicrobial resistance surveillance for Pseudomonas aeruginosa blood isolates from South Africa. J Infect Dev Ctries 2018; 12:616-624. [PMID: 31958323 DOI: 10.3855/jidc.9539] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2017] [Accepted: 01/28/2018] [Indexed: 10/31/2022] Open
Abstract
INTRODUCTION Antimicrobial resistant bacterial infections are widespread globally and increases in antimicrobial resistance presents a major threat to public health. Pseudomonas aeruginosa is an opportunistic healthcare-associated pathogen with high rates of morbidity and mortality and an extensive range of resistance mechanisms. This study describes the antibiotic susceptibility profiles of P. aeruginosa isolates from patients with bacteraemia submitted by sentinel laboratories in South Africa from 2014 to 2015. METHODOLOGY Organism identification and antimicrobial susceptibility testing were done using automated systems. Molecular methods were used to detect common resistance genes and mechanisms. RESULTS Overall the susceptibility was high for all antibiotics tested with a decrease over the two-year period. There was no change in the MIC50 and MIC90 breakpoints for all antibiotics from 2014 to 2015. The MIC50 was within the susceptible breakpoint range for most antibiotics and the MIC90 was within the susceptible breakpoint range for colistin only. Phenotypically carbapenem non-susceptible isolates harboured the following plasmid-mediated genes: blaVIM (n = 81, 12%) and blaGES (n = 6, 0.9%); blaNDM (n = 4, 0.6%) and blaOXA-48 and variants (n = 3, 0.45%). Porin deletions were observed in one meropenem non-susceptible isolate only, and multi-drug resistance efflux pumps were expressed in the majority of the non-susceptible isolates investigated. BlaVEB-1, blaIMP and blaKPC were not detected. CONCLUSION The prevalence of resistance to commonly used antibacterial agents was low for P. aeruginosa isolates and similarly, tested resistance mechanisms were detected in a relatively small proportion of isolates. Findings in this study represent baseline information for understanding antimicrobial susceptibility patterns in P. aeruginosa isolates from blood. Our surveillance report may assist in contributing to hospital treatment guidelines.
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Affiliation(s)
| | - Adriano Duse
- University of the Witwatersrand and National Health Laboratory Service, Johannesburg, South Africa.
| | - Preneshni Naicker
- University of Cape Town and National Health Laboratory Service, Groote Schuur Hospital, Cape Town, South Africa.
| | - Ranmini Kularatne
- University of the Witwatersrand and National Health Laboratory Service, Johannesburg, South Africa.
| | - Trusha Nana
- University of the Witwatersrand and National Health Laboratory Service, Johannesburg, South Africa.
| | - Ruth Lekalakala
- University of Limpopo and National Health Laboratory Service, Polokwane, South Africa.
| | - Nontombi Mbelle
- University of Pretoria and National Health Laboratory Services, Pretoria, South Africa.
| | | | | | - Praksha Ramjathan
- University of KwaZulu-Natal and National Health Laboratory Service, KwaZulu-Natal, South Africa.
| | | | - Andrew Whitelaw
- Stellenbosch University and National Health Laboratory Service, Tygerberg Hospital, Cape Town, South Africa.
| | - Olga Perovic
- National Institute for Communicable Diseases, Johannesburg, South Africa.
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Ramsamy Y, Muckart DJJ, Han KSS, Mlisana KP. The effect of prior antimicrobial therapy for community acquired infections on the aetiology of early and late onset ventilator-associated pneumonia in a level I trauma intensive care unit. S Afr J Infect Dis 2017. [DOI: 10.1080/23120053.2017.1313933] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022] Open
Affiliation(s)
- Yogandree Ramsamy
- Department of Microbiology, Prince Mshiyeni Memorial Hospital, Durban, South Africa
- Department of Medical Microbiology, School of Laboratory Medicine and Medical Sciences, University of KwaZulu-Natal, National Health Laboratory Services (KZN Academic Complex), Durban, South Africa
| | - David JJ Muckart
- Department of Surgery, Nelson R Mandela School of Medicine, University of KwaZulu-Natal, Durban, South Africa
| | - Khine Swe Swe Han
- Department of Medical Microbiology, School of Laboratory Medicine and Medical Sciences, University of KwaZulu-Natal, National Health Laboratory Services (KZN Academic Complex), Durban, South Africa
| | - Koleka P Mlisana
- Department of Medical Microbiology, School of Laboratory Medicine and Medical Sciences, University of KwaZulu-Natal, National Health Laboratory Services (KZN Academic Complex), Durban, South Africa
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