Browsing by Author "John Frean"

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African trypanosomiasis: lessons for occupational health practitioners
John Frean; Mary Ross
Brucellosis Seropositivity Using Three Serological Tests and Associated Risk Factors in Abattoir Workers in Gauteng Province South Africa
F B Kolo; A A Adesiyun; F O Fasina; B N Harris; John Frean; E et al
A case of babesiosis in a returning traveller
James W Mac Donald; John Frean; John M Ratabane; Bhavani Moodley; Karissa Mannaru; GE Holz
Clinical Improvement of Disseminated Acanthamoeba Infection in a Patient with Advanced HIV Using a NonMiltefosineBased Treatment Regimen in a LowResource Setting
Denasha Reddy; Eunice Van Den Berg; Wayne Grayson; Ramaite Mphahlele; John Frean
Exposure of South African Abattoir Workers to Coxiella burnetii
Liesl De Boni; Sumaya Mall; Veerle Msimang; Alex de Voux; Jennifer Rossouw; John Frean
Forgotten but not gone in rural South Africa urinary schistosomiasis and implications for chronic kidney disease screening in endemic countries
A Craik; M Gondwe; Nokthula Mayindi; Shingirai Chipungu; B Khoza; Francesc Gomez-Olive Casas; Stephen Tollman; John Frean; L Tomlinson; June Fabian
Forgotten but not gone in rural South Africa: Urinary schistosomiasis and implications for chronic kidney disease screening in endemic countries
(2023-02-10) Alison Craik; Mwawi Gondwe; Nokthula Mayindi; Shingirai Chipungu; Bongekile Khoza; Xavier Gómez-Olivé; Stephen Tollman; John Frean; Laurie A. Tomlinson; June Fabian
Background: Urinary schistosomiasis caused by infection with Schistosoma haematobium (S. haematobium) remains endemic in Africa and is associated with haematuria and albuminuria/proteinuria. Kidney Disease Improving Global Outcomes clinical guidelines recommend evaluating proteinuria/albuminuria and glomerular filtration rate for chronic kidney disease (CKD) diagnosis. The guidelines are informed by population data outside of Africa but have been adopted in many African countries with little validation. Our study aimed to characterise the burden of urinary schistosomiasis in rural South Africa (SA) and evaluate its relationship with markers of kidney dysfunction with implications for CKD screening. Methods: In this population-based cohort study, we recruited 2021 adults aged 20 – 79 years in the Mpumalanga Province, SA. Sociodemographic data were recorded, urinalysis performed, and serum creatinine and urine albumin and creatinine measured. Kidney dysfunction was defined as an estimated glomerular filtration rate (eGFR) <60ml/min/1.73m2 and/or urine albumin-creatinine ratio >3.0mg/mmol. S. haematobium infection was determined by urine microscopy. Multivariable analyses were performed to determine relationships between S. haematobium and markers of kidney dysfunction. Results: Data were available for 1226 of 2021 participants. 717 (58.5%) were female and the median age was 35 years (IQR 27 – 47). Prevalence of kidney dysfunction and S. haematobium was 20.2% and 5.1% respectively. S. haematobium was strongly associated with kidney dysfunction (OR 8.66; 95% CI 4.10 – 18.3) and related to albuminuria alone (OR 8.69; 95% CI 4.11 – 18.8), with no evidence of an association with eGFR <90ml/min/1.73m2 (OR 0.43; 95% CI 0.05 – 3.59). Discussion: The strong association between urinary schistosomiasis and albuminuria requires careful consideration when screening for CKD. Screening for, and treatment of, schistosomiasis should be a routine part of initial work-up for CKD in S. haematobium endemic areas. Urinary schistosomiasis, a neglected tropical disease, remains a public health concern in the Mpumulanga province of SA.
Forgotten but not gone in rural South Africa: Urinary schistosomiasis and implications for chronic kidney disease screening in endemic countries [version 1; peer review: awaiting peer review]
(2023-02-10) Alison Craik; Mwawi Gondwe; Nokthula Mayindi; Shingirai Chipungu; Bongekile Khoza; Xavier Gómez-Olivé; Stephen Tollman; John Frean; Laurie A. Tomlinson; June Fabian
Background: Urinary schistosomiasis caused by infection with Schistosoma haematobium (S. haematobium) remains endemic in Africa and is associated with haematuria and albuminuria/proteinuria. Kidney Disease Improving Global Outcomes clinical guidelines recommend evaluating proteinuria/albuminuria and glomerular filtration rate for chronic kidney disease (CKD) diagnosis. The guidelines are informed by population data outside of Africa but have been adopted in many African countries with little validation. Our study aimed to characterise the burden of urinary schistosomiasis in rural South Africa (SA) and evaluate its relationship with markers of kidney dysfunction with implications for CKD screening. Methods: In this population-based cohort study, we recruited 2021 adults aged 20 – 79 years in the Mpumalanga Province, SA. Sociodemographic data were recorded, urinalysis performed, and serum creatinine and urine albumin and creatinine measured. Kidney dysfunction was defined as an estimated glomerular filtration rate (eGFR) <60ml/min/1.73m2 and/or urine albumin-creatinine ratio>3.0mg/mmol. S. haematobium infection was determined by urine microscopy. Multivariable analyses were performed to determine relationships between S. haematobium and markers of kidney dysfunction. Results: Data were available for 1226 of 2021 participants. 717 (58.5%) were female and the median age was 35 years (IQR 27 – 47). Prevalence of kidney dysfunction and S. haematobium was 20.2% and 5.1% respectively. S. haematobium was strongly associated with kidney dysfunction (OR 8.66; 95% CI 4.10 – 18.3) and related to albuminuria alone (OR 8.69; 95% CI 4.11 – 18.8), with no evidence of an association with eGFR <90ml/min/1.73m2 (OR 0.43; 95% CI 0.05 – 3.59). Discussion: The strong association between urinary schistosomiasis and albuminuria requires careful consideration when screening for CKD. Screening for, and treatment of, schistosomiasis should be a routine part of initial work-up for CKD in S. haematobium endemic areas. Urinary schistosomiasis, a neglected tropical disease, remains a public health concern in the Mpumulanga province of SA.
Maintaining focus on administering effetive malaria treatment during the COVID 19 pandemic
Jaishree Raman; K Barnes; L Baker; M Blaylock; L Blumberg; John Frean; E Misiani; I Ukpe
Trends in the prevalence of microscopicallyconfirmed schistosomiasis in the South African public health sector 20112018
Liesl De Boni; Veerle Msimang; Alex De Voux; John Frean