Antimicrobial susceptibility of bacterial uropathogens in a South African regional hospital.

Background: Urinary tract infections are common bacterial infections affecting millions worldwide. Although treatment options for urinary tract infections are well established, with ciprofloxacin long considered one of the antibiotics of choice, increasing antibiotic resistance may delay the initiation of appropriate therapy. While this increase in antimicrobial resistance has been demonstrated in multiple studies around the world, there is a dearth of information from developing countries.

Pyrazinamide resistance in rifampicin discordant tuberculosis.

Introduction: Mycobacterium tuberculosis strains with phenotypically susceptible rpoB mutations (rifampicin discordant) have emerged following implementation of rapid molecular drug resistance testing for tuberculosis. Whilst rifampicin resistance is known to be associated with resistance to other rifamycins (rifapentine and rifabutin) as well as isoniazid and pyrazinamide, rifampicin discordant strains have shown high rates of susceptibility to isoniazid and rifabutin. However, pyrazinamide susceptibly testing results have not been reported.

Recurrent Subclinical Tuberculosis Among Antiretroviral Therapy-Accessing Participants: Incidence, Clinical Course, and Outcomes.

Background: Undiagnosed asymptomatic subclinical tuberculosis (TB) remains a significant threat to global TB control, accounting for a substantial proportion of cases among people living with human immunodeficiency virus (HIV)/AIDS (PLWHA). We determined incidence, progression, and outcomes of subclinical TB in antiretroviral therapy (ART)-accessing PLWHA with known previous TB in South Africa.

Methods: A total of 402 adult PLWHA previously treated for TB were enrolled in the prospective Centre for the AIDS Programme of Research in South Africa TRuTH (TB Recurrence Upon TB and HIV treatment) Study.

Evolving rifampicin and isoniazid mono-resistance in a high multidrug-resistant and extensively drug-resistant tuberculosis region: a retrospective data analysis.

Objectives: South Africa ranks among the highest drug-resistant tuberculosis (DR-TB) burdened countries in the world. This study assessed the changes in resistance levels in culture confirmed (MTB) in the highest burdened province of South Africa during a period where major changes in diagnostic algorithm were implemented.

Setting: This study was conducted at the central academic laboratory of the KwaZulu-Natal province of South Africa.

Mutations Causing Discordant Rifampicin Susceptibility in : Retrospective Analysis of Prevalence, Phenotypic, Genotypic, and Treatment Outcomes.

Background: Discordant genotypic/phenotypic rifampicin susceptibility testing in is a significant challenge, yet there are limited data on its prevalence and how best to manage such patients. Whether to treat isolates with mutations not conferring phenotypic resistance as susceptible or multidrug-resistant tuberculosis (MDR-TB) is unknown. We describe phenotypic and genotypic characteristics of discordant isolates and clinical characteristics and treatment outcomes of affected patients in KwaZulu-Natal, South Africa.

An unusual case of thoracic empyema caused by (nutritionally variant streptococci) in a patient with pulmonary tuberculosis and human immunodeficiency virus infection.

Introduction: Nutritionally variant streptococci (NVS) are an infrequent cause of human infection with being the least encountered species in clinical specimens. The most common infection caused by NVS is infective endocarditis.

Case Presentation: We report an unusual case of thoracic empyema due to in a patient with pulmonary tuberculosis (TB) and human immunodeficiency virus infection.

Evolution of Extensively Drug-Resistant Tuberculosis over Four Decades: Whole Genome Sequencing and Dating Analysis of Mycobacterium tuberculosis Isolates from KwaZulu-Natal.

Background: The continued advance of antibiotic resistance threatens the treatment and control of many infectious diseases. This is exemplified by the largest global outbreak of extensively drug-resistant (XDR) tuberculosis (TB) identified in Tugela Ferry, KwaZulu-Natal, South Africa, in 2005 that continues today. It is unclear whether the emergence of XDR-TB in KwaZulu-Natal was due to recent inadequacies in TB control in conjunction with HIV or other factors.