Dr Bernice N Harris

Scopus Publications

Qualitative study exploring reintegration of clinical trial participants with HIV to public health services in Johannesburg, South Africa
Sibongiseni Thandazani Nxumalo, Bernice Harris, Lizeka Napoles, Kelechi Elizabeth Oladimeji, Samanta Tresha Lalla-Edward
BMJ Open, 2024
ObjectivePeople living with HIV (PLHIV) are often recruited from primary healthcare clinics (PHC) into clinical trials. On trial completion, they are transferred back to the facility for continued care and support in managing their condition, potentially leading to better health outcomes. Because transferring PLHIV back to PHCs post-clinical trials may result in decreased access to specialised care or resources that were available during the trial, this study explored insights into challenges faced during reintegration from clinical trial settings into PHCs and antiretroviral therapy (ART) adherence post-clinical trials.DesignThis cross-sectional study was conducted using a qualitative research approach. Participants were recruited using purposive sampling.SettingThe study was conducted at the Ezintsha Research Centre in Johannesburg, South Africa, between November 2022 and February 2023.ParticipantsThe study population consisted of PLHIV who had participated in two clinical trials (DORA and ADVANCE) at the Ezintsha Research Centre in Johannesburg, South Africa.MethodsUsing a semistructured guide, 12 in-depth interviews were conducted with PLHIV until data saturation was reached. Data were then transcribed verbatim and analysed thematically with MAXQDA software.ResultsThe majority (n=8, 67%) of participants were female, and the average age of all participants was 40 (SD 7.2) years. Two main themes emerged: reintegration from clinical trials to public healthcare and barriers to ART adherence. These themes were further separated into seven subthemes, namely, negative attitude of healthcare workers, poor healthcare service delivery, poor communication to patients, waiting time at healthcare facilities, lack of privacy and confidentiality, mistakes in ART dispensing and bad reception at facilities post-clinical trials.ConclusionClinical trial sites should cultivate better stakeholder engagement with PHCs to facilitate a smoother transition of research participants, especially PLHIV, back into public healthcare for continued care.
Brucellosis Seropositivity Using Three Serological Tests and Associated Risk Factors in Abattoir Workers in Gauteng Province, South Africa
Francis B. Kolo, Abiodun A. Adesiyun, Folorunso O. Fasina, Bernice N. Harris, Jennifer Rossouw, et al.
Pathogens, 2024
Abattoir workers are liable to zoonotic infections from animals and animal products, primarily to diseases with asymptomatic and chronic clinical manifestations in animals, such as brucellosis. No published reports exist on the seroprevalence of brucellosis in abattoir workers in South Africa. Therefore, this cross-sectional study was conducted to estimate the occurrence and risk factors for Brucella exposure in abattoir workers in Gauteng Province. A total of 103 abattoir workers and managers from 6 abattoirs, where brucellosis-positive slaughtered cattle and sheep were previously detected, were interviewed and tested with serological assays using the Rose Bengal test (RBT), BrucellaCapt, and IgG-ELISA. A pre-tested questionnaire was administered to consenting respondents to obtain information on risk factors for brucellosis. Of the 103 respondents tested, the distribution of female and male workers was 16 (15.5%) and 87 (84.5%), respectively. The seroprevalence for exposure to brucellosis was 21/103 (20.4%, 95%CI: 13.1–29.5) using a combination of RBT, BrucellaCapt, or IgG-ELISA. For test-specific results, seroprevalences by RBT, BrucellaCapt, and IgG-ELISA were 13/103 (12.6%, 95%CI: 6.9–20.6), 9/103 (8.74%, 95%CI: 4.1–15.9), and 18/103 (17.5%, 95%CI: 10.7–26.2), respectively. Low-throughput abattoirs were identified as associated risks, as 29.3% of workers were seropositive compared with 12.7% of workers in high-throughput abattoirs, which highlights that direct contact at abattoirs poses higher risk to workers than indirect and direct contact outside abattoirs. This study confirms the occurrence of Brucella spp. antibodies among abattoir workers in South Africa, possibly due to occupational exposure to Brucella spp., and highlights the occupational hazard to workers. Furthermore, findings underscore that abattoir facilities can serve as points for active and passive surveillance for indicators of diseases of public health importance. We recommend periodic implementation of brucellosis testing of abattoir workers country-wide to establish baseline data for informing appropriate preventive practices and reducing the potential burden of infection rates among these high-risk workers.
Household living conditions and individual behaviours associated with malaria risk: a community-based survey in the Limpopo River Valley, 2020, South Africa
Sean M. Patrick, Marc-Karim Bendiane, Taneshka Kruger, Bernice N. Harris, Megan A. Riddin, et al.
Malaria Journal, 2023
Background Over the past decade, implementation of multiple malaria control strategies in most countries has largely contributed to advance the global malaria elimination agenda. Nevertheless, in some regions, seasonal epidemics may adversely affect the health of local populations. In South Africa, Plasmodium falciparum malaria is still present, with the Vhembe District experiencing an incidence rate of 3.79 cases/1000 person-years in 2018, particularly in the Limpopo River Valley, bordering Zimbabwe. To elucidate the complexity of the mechanisms involved in local regular malaria outbreaks, a community-based survey was implemented in 2020 that focused on the relationship between housing conditions and malaria risky behaviours. Methods The community-based cross-sectional survey was conducted among the population of three study sites in the Vhembe District, which were selected based on malaria incidence rate, social and health characteristics of inhabitants. The household survey used a random sampling strategy, where data were collected through face-to-face questionnaires and field notes; to described the housing conditions (housing questionnaire), and focus on individual behaviours of household members. Statistical analyses were performed combining hierarchical classifications and logistic regressions. Results In this study, 398 households were described, covering a population of 1681 inhabitants of all ages, and 439 adults who participated in community-based survey. The analysis of situations at risk of malaria showed that the influence of contextual factors, particularly those defined by the type of habitat, was significant. Housing conditions and poor living environments were factors of malaria exposure and history, regardless of site of investigation, individual preventive behaviours and personal characteristics of inhabitants. Multivariate models showed that, considering all personal characteristics or behaviours of inhabitants, housing conditions such as overcrowding pressures were significantly associated with individual malaria risk. Conclusions The results showed the overwhelming weight of social and contextual factors on risk situations. Considering the Fundamental Causes Theory, malaria control policies based on health behaviour prevention, should reinforce access to care or promoting health education actions. Overarching economic development interventions in targeted geographical areas and populations have to be implemented, so that malaria control and elimination strategies can be efficiently and effectively managed.
A Retrospective Medical Record Review to Describe Health Status and Cardiovascular Disease Risk Factors of Bus Drivers in South Africa
Susan C. Aitken, Samanta T. Lalla-Edward, Maren Kummerow, Stan Tenzer, Bernice N. Harris, et al.
International Journal of Environmental Research and Public Health, 2022
Cardiovascular disease (CVD) is the leading cause of death globally. The occupational challenges of bus drivers may increase their risk of CVD, including developing obesity, hypertension, and diabetes. We evaluated the medical records of 266 bus drivers visiting an occupational medical practice between 2007 and 2017 in Johannesburg, South Africa, to determine the health status of bus drivers and investigate risk factors for CVD, and their impact on the ability to work. The participants were in majority male (99.3%) with a median age of 41.2 years (IQR 35.2); 23.7% were smokers, and 27.1% consumed alcohol. The median body mass index (BMI) was 26.8 m/kg2 (IQR 7.1), with 63.1% of participants having above normal BMI. Smoking, BMI, and hypertension findings were in line with national South African data, but diabetes prevalence was far lower. Undiagnosed hypertension was found in 9.4% of participants, uncontrolled hypertension in 5.6%, and diabetes in 3.0%. Analysis by BMI category found that obesity was significantly associated with increased odds of hypertension. Uncontrolled hypertension was the main reason for being deemed ‘unfit to work’ (35.3%). Our research highlights the need for more regular screening for hypertension and interventions to address high BMI.
Bovine brucellosis in gauteng, south africa: Seroprevalence amongst cattle handlers and variables associated with seropositive cattle herds, 2014–2016
Krpasha Govindasamy, Peter N. Thompson, Bernice N. Harris, Jennifer Rossouw, Darrell A. Abernethy, et al.
Pathogens, 2021
In South Africa, the prevalence of cattle handler exposure to Brucella on cattle farms is unknown and risk factors and cattle symptoms associated with infected cattle herds are unavailable. To address this gap, a case-control study of cattle herds was conducted in Gauteng province and farm workers and veterinary officials were tested for exposure to Brucella. Seroprevalence amongst farm workers exposed to case herds ranged from 4.0% (BrucellaCapt®) to 16.7% (IgG ELISA®), compared to those exposed to control herds, where seroprevalence ranged from 1.9% (BrucellaCapt®) to 5.7% (IgG ELISA®). Seroprevalence amongst veterinary officials was significantly greater compared to farm workers exposed to case herds for the outcome RBT+ IgM- IgG+ (OR = 11.1, 95% CI: 2.5–49.9, p = 0.002) and RBT- IgM- IgG+ (OR = 6.3, 95% CI: 2.3–17.3, p < 0.001). Risk factors associated with being an infected herd were: being a government-sponsored farm vs. private farm (OR 4.0; 95% CI: 1.4–11.3; p = 0.009), beef vs. dairy herd (OR 7.9; 95% CI: 1.4–44.9; p = 0.020), open vs. closed herd (OR 3.3; 95% CI: 1.1–10.4; p = 0.038) and the presence of antelope on the farm (OR 29.4; 95% CI: 4.0–218.2; p = 0.001). Abortions (OR = 5.1; 95% CI: 2.0–13.3; p < 0.001), weak calves in the herd (OR = 8.0; 95% CI: 2.6–24.4; p < 0.001), reduction in number of calves born (OR = 9.0; 95% CI: 2.1–43.6; p < 0.001), reduction in conception rate (OR = 3.9; 95% CI: 0.8–18.3; p = 0.046), hygromas in cattle (p = 0.011) and farmers reporting brucellosis-like symptoms in their farm workers or in him/herself (OR = 3.4; 95% CI: 1.3–8.7; p = 0.006) were more likely to be associated with Brucella infected herds than control herds. This evidence can be used in strategic planning to protect both human and herd health.
Knowledge of brucellosis, health-seeking behaviour, and risk factors for brucella infection amongst workers on cattle farms in gauteng, south africa
Krpasha Govindasamy, Eric M. C. Etter, Bernice N. Harris, Jennifer Rossouw, Darrell A. Abernethy, et al.
Pathogens, 2021
Brucellosis in humans is under-detected and underreported in sub-Saharan Africa. Risk factors associated with Brucella infection and health seeking behaviour in response to brucellosis-like symptoms, amongst cattle farm workers and veterinary officials in South Africa, are unknown. Farm workers and veterinary officials (N = 230) were screened for brucellosis using commercial Rose Bengal Test (RBT®), IgM Enzyme-linked Immunoassay (ELISA)®, IgG ELISA® and the BrucellaCapt® test. Knowledge of brucellosis and risk factors for exposure to Brucella were also investigated. Seroprevalence varied according to test used: 10.1% (RBT®), 20.9% (IgG ELISA®) and 6.5% (BrucellaCapt®). Only 22.2% (6/27) of veterinary officials opt to visit a clinic, doctor, or hospital in response to self-experienced brucellosis-like symptoms, compared to 74.9% (152/203) of farm workers (p < 0.001). Of the BrucellaCapt® seropositive participants, 53% (7/15) did not visit a clinic in response to brucellosis-like symptoms. Weak evidence of an association between the handling of afterbirth or placenta and infection of a short evolution (RBT®, IgM ELISA® and IgG ELISA® seropositive) was found (OR = 8.9, 95% CI: 1.0–81.1, p = 0.052), and strong evidence of an association between this outcome and the slaughter of cattle (OR = 5.3, 95% CI: 1.4–19.6, p = 0.013). There was strong evidence of a positive association between inactive/resolved infection and veterinary officials vs. farm workers exposed to seropositive herds (OR = 7.0, 95% CI: 2.4–20.2, p < 0.001), with a simultaneous negative association with the handling of afterbirth or placenta (OR = 3.9, 95% CI: 1.3–11.3, p = 0.012). Findings suggest a proportion of undetected clinical cases of brucellosis amongst workers on cattle farms in Gauteng.
Factors predicting 6-month retention among people with opioid use disorders accessing outpatient methadone maintenance therapy in Tshwane, South Africa
South African Medical Journal, 2021
Factors predicting 6-month retention among people with opioid use disorders accessing outpatient methadone maintenance therapy in Tshwane, South Africa
N R Gloeck, B N Harris, E M Webb, A Scheibe
South African Medical Journal, 2020
BACKGROUND In South Africa (SA), increasing illicit opioid use and associated health challenges can be managed with opioid substitution therapy (OST), such as methadone, if the recommended dose and duration of use are prescribed. The Community Oriented Substance Use Programme (COSUP) provides free methadone to patients with opioid use disorder in Tshwane, SA, on need-based criteria. OBJECTIVES To determine selected sociodemographic and substance use treatment factors associated with retention for at least 6 months among participants receiving methadone as part of OST in COSUP. METHODS This was a retrospective cohort study using secondary data of patients treated with methadone at 8 COSUP sites. The factors associated with at least 6 months' retention for 575 participants from December 2016 to September 2018 were analysed. RESULTS There were 91.3% males, 86.4% South Africans and 85.9% black Africans, with a median age of 30 years. At baseline, the majority were injecting heroin (55.5%) and were provided with free methadone (59.3%). The median dose of methadone at 6 months or on leaving the programme was 20 mg; 38.4% of participants were retained for at least 6 months. Of those not retained, the median duration on methadone was 56 days, whereas for those retained for at least 6 months, the median number of days on methadone were 254. After adjusting for sex and age, participants receiving methadone doses <50 mg had lower odds of being retained (0 - 20 mg: adjusted odds ratio (aOR) 0.25; p=0.002; 95% confidence interval (CI) 0.10 - 0.61; >20 - 40 mg: aOR 0.20; p<0.001; 95% CI 0.08 - 0.49) than those administered ≥50 mg. Participants who received free methadone had 3.75 the odds of being retained than those buying it themselves (p<0.001; 95% CI 2.47 - 5.70). Participants treated in the inner city had 5.19 the odds of being retained than those in a suburban setting (p<0.001; 95% CI 2.99 - 9.03). Compared with black African participants, white participants had 3.39 the odds of being retained (p=0.001; 95% CI 1.64 - 7.00). Injecting heroin users had 0.63 the odds of being retained (p=0.032; 95% CI 0.41 - 0.96). CONCLUSIONS To maximise retention on OST, methadone should be free, with maintenance doses >50 mg. Reasons for lower retention among participants from periurban settings, those who inject and those from previously disadvantaged racial groups need to be explored, and findings used to inform programming.
Sero-prevalence of bovine brucellosis in the Bojanala Region, North West Province, South Africa 2009-2013
Cheryl M.E. McCrindle, Solly N. Manoto, Bernice Harris
Journal of the South African Veterinary Association, 2020
Bovine brucellosis affects food safety, food security and human health in rural communities in the North West Province, South Africa. The World Organisation for Animal Health suggests routine sero-surveillance and vaccination of cattle for control and to prevent zoonotic transmission. Although sero-surveillance and subsidised vaccination have been in place for decades, data from Bojanala have not previously been analysed. The aim of this study was to retrospectively analyse historical data on routine sero-surveillance of bovine brucellosis and state subsidised vaccination, in communal, commercial and dairy cattle in the study area. This was a descriptive, cross-sectional retrospective analysis of records from all adult cows bled by the state veterinary services during routine sero-surveillance for bovine brucellosis, in the Bojanala Region, North West Province, between 2009 and 2013. Fewer communal (N = 11 815) and dairy (N = 6696), than commercial beef (N = 28 251) cows, were tested. Overall herd prevalence (33.33%), differed significantly from individual prevalence (3.18%) in all groups. Communal herds had both the highest herd prevalence (38.8%) and the highest individual prevalence (5.2%). Both herd and individual sero-prevalence were lowest in dairy cattle, possibly because registered dairy herds are routinely tested. Over the 5-year study period, only 24 086 (7.15%) of the 342 500 cows eligible for free vaccination, were vaccinated. The annual number of cattle tested was highly variable. Dairy cattle that were regularly tested had a significantly lower herd and individual prevalence. Herd prevalence would be useful for spatial mapping, whilst individual prevalence could better reflect the risk of zoonotic transmission.
Influenza epidemiology and vaccine effectiveness among patients with influenza-like illness, viral watch sentinel sites, South Africa, 2005-2009
Genevie M. Ntshoe, Johanna M. McAnerney, Stefano Tempia, Lucille Blumberg, Jocelyn Moyes, et al.
Plos One, 2014
Background There is limited data on the epidemiology of influenza and few published estimates of influenza vaccine effectiveness (VE) from Africa. In April 2009, a new influenza virus strain infecting humans was identified and rapidly spread globally. We compared the characteristics of patients ill with influenza A(H1N1)pdm09 virus to those ill with seasonal influenza and estimated influenza vaccine effectiveness during five influenza seasons (2005–2009) in South Africa. Methods Epidemiological data and throat and/or nasal swabs were collected from patients with influenza-like illness (ILI) at sentinel sites. Samples were tested for seasonal influenza viruses using culture, haemagglutination inhibition tests and/or polymerase chain reaction (PCR) and for influenza A(H1N1)pdm09 by real-time PCR. For the vaccine effectiveness (VE) analysis we considered patients testing positive for influenza A and/or B as cases and those testing negative for influenza as controls. Age-adjusted VE was calculated as 1-odds ratio for influenza in vaccinated and non-vaccinated individuals. Results From 2005 through 2009 we identified 3,717 influenza case-patients. The median age was significantly lower among patients infected with influenza A(H1N1)pdm09 virus than those with seasonal influenza, 17 and 27 years respectively (p<0.001). The vaccine coverage during the influenza season ranged from 3.4% in 2009 to 5.1% in 2006 and was higher in the ≥50 years (range 6.9% in 2008 to 13.2% in 2006) than in the <50 years age group (range 2.2% in 2007 to 3.7% in 2006). The age-adjusted VE estimates for seasonal influenza were 48.6% (4.9%, 73.2%); −14.2% (−9.7%, 34.8%); 12.0% (−70.4%, 55.4%); 67.4% (12.4%, 90.3%) and 29.6% (−21.5%, 60.1%) from 2005 to 2009 respectively. For the A(H1N1)pdm09 season, the efficacy of seasonal vaccine was −6.4% (−93.5%, 43.3%). Conclusion Influenza vaccine demonstrated a significant protective effect in two of the five years evaluated. Low vaccine coverage may have reduced power to estimate vaccine effectiveness.
Measles Outbreak in South Africa: Epidemiology of Laboratory-Confirmed Measles Cases and Assessment of Intervention, 2009-2011
Genevie M. Ntshoe, Johanna M. McAnerney, Brett N. Archer, Sheilagh B. Smit, Bernice N. Harris, et al.
Plos One, 2013
Public health systems strengthening in Africa: the role of South Africa Field Epidemiology and Laboratory Training Programme.
Pan African Medical Journal, 2011
Molecular epidemiological investigation of a typhoid fever outbreak in South Africa, 2005: The relationship to a previous epidemic in 1993
K. H. KEDDY, A. SOOKA, H. ISMAIL, A. M. SMITH, I. WEBER, et al.
Epidemiology and Infection, 2011
Rubella in South Africa: An impending greek tragedy?
South African Medical Journal, 2009
Measles outbreak in South Africa, 2003-2005
South African Medical Journal, 2009
Polio eradication - The validity of surveillance indicators
Bernice N Harris, David N Durrheim, Gboyega A Ogunbanjo
Tropical Medicine and International Health, 2003
Leprosy in Mpumalanga Province, South Africa - Eliminated or hidden?
Leprosy Review, 2002
Neonatal tetanus elimination in Mpumalanga Province, South Africa
C. D. Idema, B. N. Harris, G. A. Ogunbanjo, D. N. Durrheim
Tropical Medicine and International Health, 2002
Impact of the 1996-1997 supplementary measles vaccination campaigns in South Africa
A. Uzicanin
International Journal of Epidemiology, 2002
The use of hospital-based nurses for the surveillance of potential disease outbreaks
Bulletin of the World Health Organization, 2001

MOST CITED SCHOLAR PUBLICATIONS

Part IV. Human infections and antibiotic resistance
BM Crowther-Gibson P, Govender N, Lewis DA, Bamford C, Brink A, von Gottberg ...
S Afr Med J 101 (8 Pt 2), 567-78 , 2011
2011
Citations: 73
Measles outbreak in South Africa: epidemiology of laboratory-confirmed measles cases and assessment of intervention, 2009–2011
GM Ntshoe, JM McAnerney, BN Archer, SB Smit, BN Harris, S Tempia, ...
PLoS One 8 (2), e55682 , 2013
2013
Citations: 70
Measles outbreak in South Africa, 2003-2005
ML McMorrow, G Gebremedhin, J Van den Heever, R Kezaala, BN Harris, ...
South African Medical Journal 99 (5) , 2009
2009
Citations: 46
Impact of the 1996–1997 supplementary measles vaccination campaigns in South Africa
A Uzicanin, R Eggers, E Webb, B Harris, D Durrheim, G Ogunbanjo, ...
International journal of epidemiology 31 (5), 968-976 , 2002
2002
Citations: 38
The use of hospital-based nurses for the surveillance of potential disease outbreaks
DN Durrheim, BN Harris, R Speare, K Billinghurst
Bulletin of the World Health Organization 79 (1), 22-27 , 2001
2001
Citations: 38
Influenza epidemiology and vaccine effectiveness among patients with influenza-like illness, viral watch sentinel sites, South Africa, 2005–2009
GM Ntshoe, JM McAnerney, S Tempia, L Blumberg, J Moyes, A Buys, ...
PloS One 9 (4), e94681 , 2014
2014
Citations: 37
Polio eradication–the validity of surveillance indicators
BN Harris, DN Dürrheim, GA Ogunbanjo
Tropical Medicine & International Health 8 (5), 386-391 , 2003
2003
Citations: 32
A serosurvey of water-borne pathogens amongst canoeists in South Africa
MB Taylor, PJ Becker, EJ Van Rensburg, BN Harris, IW Bailey, ...
Epidemiology & Infection 115 (2), 299-307 , 1995
1995
Citations: 31
Rubella in South Africa: an impending Greek tragedy?
BD Schoub, BN Harris, J McAnerney, L Blumberg
South African Medical Journal 99 (7), 515-519 , 2009
2009
Citations: 30
Molecular epidemiological investigation of a typhoid fever outbreak in South Africa, 2005: the relationship to a previous epidemic in 1993
KH Keddy, A Sooka, H Ismail, AM Smith, I Weber, ME Letsoalo, BN Harris
Epidemiology & Infection 139 (8), 1239-1245 , 2011
2011
Citations: 29
Neonatal tetanus elimination in Mpumalanga Province, South Africa
CD Idema, BN Harris, GA Ogunbanjo, DN Dürrheim
Tropical Medicine & International Health 7 (7), 622-624 , 2002
2002
Citations: 29
Leprosy in Mpumalanga Province, South Africa—eliminated or hidden?
DN Durrheim, A Fourie, E Balt, M Le Roux, BN Harris, M Matebula, ...
Leprosy review 73 (4), 326-333 , 2002
2002
Citations: 25
Anthropometric, vitamin A, iron and immunisation coverage status in children aged 6-71 months in South Africa, 1994.
SAVACG SAVACG)
S Afr Med J 86 (4), 354-7 , 1996
1996
Citations: 22
Evaluation of the notifiable disease surveillance system in Gauteng Province, South Africa
IB Weber
PQDT-Global , 2007
2007
Citations: 20
Knowledge of Brucellosis, Health-Seeking Behaviour, and Risk Factors for Brucella Infection amongst Workers on Cattle Farms in Gauteng, South Africa
K Govindasamy, E Etter, BN Harris, J Rossouw, DA Abernethy, ...
Pathogens 10 (11), 1484 , 2021
2021
Citations: 17
Public health systems strengthening in Africa: the role of South Africa field epidemiology and laboratory training Programme
L Kuonza, K San Tint, B Harris, I Nabukenya
The Pan African Medical Journal 10 (Suppl 1), 8 , 2011
2011
Citations: 15
Brucellosis Seropositivity Using Three Serological Tests and Associated Risk Factors in Abattoir Workers in Gauteng Province, South Africa
FB Kolo, AA Adesiyun, FO Fasina, BN Harris, J Rossouw, C Byaruhanga, ...
Pathogens 13 (1), 64 , 2024
2024
Citations: 14
Household living conditions and individual behaviours associated with malaria risk: a community-based survey in the Limpopo River Valley, 2020, South Africa
SM Patrick, MK Bendiane, T Kruger, BN Harris, MA Riddin, H Trehard, ...
Malaria Journal 22 (1), 156 , 2023
2023
Citations: 14
Factors predicting 6-month retention among people with opioid use disorders accessing outpatient methadone maintenance therapy in Tshwane, South Africa
NR Gloeck, BN Harris, EM Webb, A Scheibe
South African Medical Journal 111 (1), 68-73 , 2021
2021
Citations: 13
Sero-prevalence of bovine brucellosis in the Bojanala Region, North West Province, South Africa 2009-2013
CME McCrindle, SN Manoto, B Harris
Journal of the South African Veterinary Association 91 (1), 1-6 , 2020
2020
Citations: 11

Dr Bernice N Harris

RESEARCH, TEACHING, or OTHER INTERESTS

Scopus Publications

RECENT SCHOLAR PUBLICATIONS

MOST CITED SCHOLAR PUBLICATIONS