Phenotypic and genotypic characterization of ticks and tick-borne pathogens from cattle in selected villages of Greater Letaba Municipality in Limpopo Province, South Africa.

Ticks are blood ectoparasites that feed on domestic, wild animals and humans. They spread a variety of infections such as protozoa, viruses, and bacteria. Moreover, cattle reared by smallholder farmers are susceptible to ticks and tick-borne pathogens. Therefore, accurate identification of ticks and detection of tick-borne pathogens is crucial. The main aim of this study was to identify and characterize ticks and tick-borne pathogens from selected villages in Greater Letaba Municipality, Limpopo Province, using morphological and molecular techniques. A total of 233 ticks were collected from cattle and identified morphologically using appropriate morphological keys. The following tick species were identified: Amblyomma hebraeum, Hyalomma rufipes, Hyalomma truncatum, Rhipicephalus appendiculatus, Rhipicephalus (Boophilus) decoloratus, Rhipicephalus (Boophilus) microplus, Rhipicephalus evertsi evertsi, and Rhipicephalus sanguineus. Rhipicephalus spp. was the most common species accounting to 73.8% of the identified ticks. The genomic DNA was extracted from the whole tick for tick identification and from midguts of the ticks for the detection of tick-borne pathogens, followed by amplification and sequencing. A total of 27 samples were positive for tick-borne pathogens: 23 samples tested positive for Theileria and four samples tested positive for Ehrlichia. Anaplasma and Rickettsial OmpB could not be detected from any of the samples. There was no obvious grouping of ticks and tick-borne pathogens on the bases of their locality. The findings of this study confirm previous reports that indicated that cattle reared by smallholder farmers harbor various ticks and tick-borne pathogens of veterinary, public health, and economic importance. Regular monitoring of tick infestations in villages around the study areas is recommended to avoid disease outbreaks.

Depression among people living with HIV at a district hospital in KwaZulu-Natal, South Africa.

BACKGROUND:  Depression is a debilitating condition worldwide and a major contributor to the overall global burden of disease. The prevalence of depression is estimated to be higher in people living with HIV and AIDS (PLWHA) compared to the general population, with disease related complications increasing when mental health problems remain untreated. The aim of the study was to determine the prevalence of depression among PLWHA who attend a district hospital ART clinic in KwaZulu-Natal (KZN), South Africa (SA). METHODS:  Using strict systematic sampling, a descriptive cross-sectional study was employed with 121 adult outpatients attending an antiretroviral clinic at a district hospital in KZN, SA. Their biographical and clinical characteristics were obtained through a questionnaire and medical records, while depression was evaluated using the PHQ-9 scale. The data were analysed using descriptive and inferential statistics. RESULTS:  A total of 121 participants were recruited for this study. The prevalence of depression was 19.8% and significantly associated with a poor support system (adjusted odds ratio [aOR] = 3.60, p = 0.010). Female patients were more likely to have depressive symptoms than males (aOR = 0.73; confidence interval: 0.28-1.90) although this was not statistically significant. Age, marital status and viral load were not contributors to depression. CONCLUSION:  Routine screening for depression among PLWHA at primary health care (PHC) level may improve detection rates, earlier treatment and overall health outcomes.Contribution: The results emphasise the need for patient-centeredness and holistic care that involves addressing mental health for PLWHA, given that HIV is a lifelong condition.

Audiological profile of patients with type 2 diabetes mellitus.

BACKGROUND:  South Africa shows a high prevalence of type 2 diabetes with reported association with auditory dysfunction. OBJECTIVES:  To describe the audiological profile of adults with this metabolic condition. METHOD:  Employing a descriptive research design, 35 individuals with type 2 diabetes, selected through purposive sampling, underwent a basic audiological assessment in addition to extended high-frequency (EHF) audiometry, distortion product otoacoustic emissions (DPOAE) testing and neurological auditory brainstem response (ABR) test. RESULTS:  This study revealed a 31.4% prevalence of hearing loss with 81.8% being sensorineural in nature. Poor hearing thresholds were observed at 16 kHz (n = 19; 54.3%), 18 kHz (n = 24; 68.6%) and 20 kHz (n = 30; 85.7%) in the right ear and at 16 kHz (n = 20; 57.1%), 18 kHz (n = 24; 68.6%) and 20 kHz (n = 30; 85.7%) in the left ear. Absent DPOAEs were observed at 6 kHz (n = 20; 51.7%) and 8 kHz (n = 24; 68.6%) in the right ear and at 6 kHz (n = 17; 48.6%) and 8 kHz (n = 29; 82.9%) in the left ear, possibly indicating that type 2 diabetes specifically targets higher frequency hearing. The ABR results revealed a delayed absolute latency of wave III bilaterally (right ear -69%; left ear - 51%), suggesting an impact of this metabolic disease on retro-cochlear pathways. CONCLUSION:  Hearing loss should be recognised as a comorbidity accompanying type 2 diabetes, which indicates the need for routine comprehensive audiological assessments to facilitate early detection and intervention.Contribution: The present findings have implications for audiology clinical protocols; diabetes related health policies and patient education.

Clinical Coxiella burnetii infection in sable and roan antelope in South Africa.

Various zoonotic microorganisms cause reproductive problems such as abortions and stillbirths, leading to economic losses on farms, particularly within livestock. In South Africa, bovine brucellosis is endemic in cattle, and from 2013-2018, outbreaks of Brucella melitensis occurred in sable. Coxiella burnetii, the agent responsible for the zoonotic disease known as Q-fever and/or coxiellosis, also causes reproductive problems and infects multiple domestic animal species worldwide, including humans. However, little is known of this disease in wildlife. With the expansion of the wildlife industry in South Africa, diseases like brucellosis and coxiellosis can significantly impact herd breeding success because of challenges in identifying, managing and treating diseases in wildlife populations. This study investigated samples obtained from aborted sable and roan antelope, initially suspected to be brucellosis, from game farms in South Africa using serology tests and ruminant VetMAX™ polymerase chain reaction (PCR) abortion kit. The presence of C. burnetii was confirmed with PCR in a sable abortion case, while samples from both sable and roan were seropositive for C. burnetii indirect enzyme-linked immunosorbent assay (iELISA). This study represents the initial report of C. burnetii infection in sable and roan antelope in South Africa. Epidemiological investigations are crucial to assess the risk of C. burnetii in sable and roan populations, as well as wildlife and livestock in general, across South Africa. This is important in intensive farming practices, particularly as Q-fever, being a zoonotic disease, poses a particular threat to the health of veterinarians and farm workers as well as domestic animals.Contribution: A report of clinical C. burnetii infection in the wildlife industry contributes towards the limited knowledge of this zoonotic disease in South Africa.

An Exploration of the Experiences and Perceptions of TBI Survivors About Accessing Vocational Rehabilitation During the COVID-19 Pandemic.

Background: Statistics indicate a high prevalence of TBI in South Africa, with many individuals with TBI not returning to work. The lack of return to work among TBI survivors is particularly due to factors such as injury severity, preinjury educational and occupational status, and age at injury. However, in addition to the above factors, there was the COVID-19 pandemic, which resulted in the de-escalation of nonessential outpatient services in order to assist with curbing the spread of the virus. Objective: The aim of the article is to explore the experiences and perceptions of TBI survivors about accessing vocational rehabilitation during the COVID-19 pandemic and how this has affected their worker roles. Method: A descriptive, explorative qualitative research design was used, and semistructured interviews were conducted to collect data. The authors subsequently analysed the transcribed data using a thematic analysis approach. The COREQ (consolidated criteria for reporting qualitative research) checklist was used as a reporting guideline. Ten TBI survivors and two individuals working in the public health sector participated in this study. Two semistructured interviews were conducted with each research participant. Results: Three themes emanated from the study, namely, Theme 1: "The barriers to accessing rehabilitation during the COVID-19 pandemic" represents the participants' barriers to accessing rehabilitation programmes throughout the COVID-19 pandemic. Theme 2: "Lack of rehabilitation negatively influenced the individual with TBI occupational performance" describes how the lack of OT rehabilitation during the COVID-19 pandemic impacted the participants' quality of life. Theme 3: "Factors that facilitated access to rehabilitation during the COVID-19 pandemic" describes the factors that facilitated access to OT rehabilitation services during the COVID-19 pandemic. Conclusion: The study found that there were barriers and facilitators to accessing occupational therapy rehabilitation during the COVID-19 pandemic for TBI survivors. More research needs to be conducted to explore the efficacy of telehealth/telemedicine for occupational therapy rehabilitation and the role of the occupational therapist in global pandemics.

Seroprevalence and associated risk factors for Neospora caninum infection in dairy cattle in South Africa.

Bovine neosporosis is a widespread parasitic disease associated with significant economic losses. Its effects on the reproductive performance of cows have resulted in losses that run into the hundreds of millions of US dollars in dairy industries in various countries (Reichel et al., Int J Parasitol 43:133-142, 2013). Due to outdated and scant information on the occurrence of Neospora caninum infection in South Africa, the study aimed to determine the seroprevalence and risk factors associated with infection in dairy cattle in South Africa. A total of 1401 blood samples were randomly collected from cattle on 48 dairy farms in seven of the nine provinces in South Africa. A close-ended questionnaire was used in a cross-sectional study to obtain farm-level and animal-level data. Serological testing was done using a commercial IDvet Screen® Neospora caninum Indirect ELISA. An overall seroprevalence, adjusted for test sensitivity and specificity, of 2.3% (95% CI, 1.3-4.1) was detected and 48% (23/48) of sampled farms had at least one animal testing positive. The highest seroprevalence of N. caninum was in the KwaZulu-Natal province with 7.5% (95% CI, 3.8-14.3), and the lowest in Western Cape with 0.1% (95% CI, 0-1.2). The highest within-farm seroprevalence of 25% was detected on a farm in the North West Province. In a multivariable logistic regression model, the odds of N. caninum seropositivity were higher in Holstein-Friesian cattle when compared to other breeds. Good hygiene was identified as a protective factor. Cattle left out on pasture had increased odds of testing positive for N. caninum compared to those that were penned. The odds of testing seropositive for N. caninum was higher on farms that practised segregation of cattle into different age groups. The purchase of replacement animals was a significant risk factor, as open herds had increased odds of N. caninum seropositivity. Cattle on farms that did not have a specific calving location were more likely to be seropositive. This is the first such study in South Africa and shows that N. caninum is widely distributed in the country at a low seroprevalence, but it may be a cause of concern on certain farms.

Transitioning between the EQ-5D youth and adult descriptive systems in a group of adolescents.

PURPOSE: To investigate whether the same health state results in the same distribution of responses on the EQ-5D youth and adult descriptive systems. METHODS: Adolescents aged 13-18 years with a range of health conditions and from the general school going population were recruited in South Africa (ZA) and Ethiopia (ET). In ZA participants completed the English EQ-5D-3L, EQ-5D-Y-3L and EQ-5D-5L in parallel. Whereas in ET participants completed the Amharic EQ-5D-5L and EQ-5D-Y-5L in parallel. Analysis aimed to describe the transition between youth and adult instruments and not differences between countries. RESULTS: Data from 592 adolescents completing the EQ-5D-3L, EQ-5D-Y-3L and EQ-5D-5L (ZA) and 693 completing the EQ-5D-5L and EQ-5D-Y-5L (ET) were analysed. Adolescents reported more problems on the youth versions compared to the adult version for the dimension of mental health. 13% and 4% of adolescents who reported no problems on the EQ-5D-3L and EQ-5D-5L reported some problems on the EQ-5D-Y-3L respectively. This was less notable with transition between the five level versions with 4% of adolescents reporting more problems on the EQ-5D-Y-5L than the EQ-5D-5L. Very few adolescents reported severe problems (level 3 on the EQ-5D-3L or EQ-5D-Y-3L and level 4 and level 5 on the EQ-5D-5L or EQ-5D-5L) thus there was little variation between responses between the versions. In ZA, discriminatory power, measured on the Shannon's Index, was higher for Y-3L compared to 3L for pain/discomfort (ΔH'=0.11) and anxiety/depression (ΔH'=0.04) and across all dimensions for Y-3L compared to 5L. Similarly, in ET discriminatory power was higher for Y-5L than 5L (ΔH' range 0.05-0.09). Gwet's AC showed good to very good agreement across all paired (ZA) 3L and (ET) 5L dimensions. The summary score of all EQ-5D versions were able to differentiate between known disease groups. CONCLUSION: Despite the overall high levels of agreement between EQ-5D instruments for youth and for adults, they do not provide identical results in terms of health state, from the same respondent. The differences were most notable for anxiety/depression. These differences in the way individuals respond to the various descriptive systems need to be taken into consideration for descriptive analysis, when transitioning between instruments, and when comparing preference-weighted scores.

Material needs security and cardiovascular risk factors in rural South Africa.

BACKGROUND: The prevalence of cardiovascular disease is burgeoning in low- and middle-income countries (LMICs). In sub-Saharan Africa, the prevalence of cardiovascular risk factors is increasing, though rates of CVD diagnosis and management remain low. Awareness of the influence of social determinants of health (SDOH) on cardiovascular outcomes is growing, however, most work focuses on high-income countries. Material needs security is a measure of SDOH that may be particularly relevant for LMICs. This study investigated the relationship between material needs security and cardiovascular risk in older adults living in South Africa. METHODS: The analysis included 5059 respondents age ≥ 40 in the Health and Aging in Africa survey, an observational cohort study administered in 2014 in Mpumalanga Province, South Africa. Linear regression models tested the association between material needs and eight cardiovascular risk factors (waist-to-hip ratio, body mass index, blood pressure, glucose, cholesterol, LDL, and triglycerides). Adjusted linear regression models controlled for sociodemographic confounders. RESULTS: There were significant adjusted associations found between increased material needs security and four cardiovascular risk factors, including waist-to-hip ratio (ß = 0.001; 95% CI [0.00002,0.002]), BMI (ß = 0.19; 95%CI=[0.14,0.24]), glucose (ß = 0.46; 95%CI=[0.02,0.90]), and triglycerides (ß = 0.26; 95%CI=[0.02,0.49]). CONCLUSION: Increased material needs security was associated with significantly increased cardiovascular risk in older adults in rural South Africa. These findings can inform the approach to treatment and management of cardiovascular disease in South Africa and similar LMICs. Future investigations should evaluate the implementation and efficacy of interventions that recognize the role of material needs security in cardiovascular risk.

Factors associated with mortality among laboratory-diagnosed drug-resistant tuberculosis patients on treatment, KwaZulu-Natal Province, 2017-2019.

Introduction: tuberculosis (TB) remains a leading cause of death in South Africa. KwaZulu-Natal (KZN) is one of the provinces with a high burden of TB/drug-resistant TB cases and deaths. We determined predictors for mortality among drug-resistant TB patients on treatment in KZN province. Methods: we conducted a retrospective cohort study using secondary data from the Electronic Drug-Resistant Tuberculosis Register. We used a modified Poisson regression model with robust standard errors to determine predictors for drug-resistant TB mortality. Results: of the 7,692 eligible patients, 1,234 (16.0%) died. Males predominated (707, 57.3%) and the median age was 36 years (Interquartlile Range: 29-45 years). The majority (978, 79.2%) were HIV-TB co-infected with 911 (93%) on antiretroviral treatment (ART). The predictors included HIV-TB co-infection without ART (aIRR 3.4; 95% CI: 2.3-5.1), unknown ART status (aIRR: 1.8; 95% CI: 1.4-2.3), aged ≥60 years (aIRR: 2.1; 95% CI: 1.6-2.7), previous drug-resistant TB (aIRR: 1.5; 95% CI: 1.2-1.8) and exposure to second-line drugs (aIRR: 1.7; 95% CI: 1.4-2.0). Other predictors were hospitalization during treatment initiation (aIRR 2.5; 95% CI 2.0-3.1), initiation in other treatment facilities (aIRR: 2.2; 95% CI: 1.6-2.9) and rifampicin-resistant (aIRR: 1.2; 95% CI: 1.1-1.4). Bedaquiline fumarate was a significant protective factor against death (aIRR: 0.5; 95% CI: 0.4-0.5). Conclusion: older age, HIV co-infection without ART, hospitalization for treatment initiation, exposure to second-line drugs and a previous episode of drug-resistant TB were predictors for DR-TB mortality. Early treatment initiation and provision of antiretroviral treatment for all co-infected patients may reduce DR-TB mortality in the Province.

Perfusion and pulsatile pressure: their relationship with target organ damage in the African-PREDICT study.

BACKGROUND: Hypertension is the leading risk factor for subclinical target-organ damage (TOD) and cardiovascular disease (CVD). Little is known about the relationship between different pressure measures and subclinical TOD, especially in young populations. We compared the strength of associations of subclinical TOD markers with perfusion and pulsatile pressure in young adults. METHODS: A total of 1 187 young adults from the African-PREDICT study were included. Ambulatory mean arterial pressure (MAP) and pulse pressure (PP) was obtained. Markers of subclinical TOD were measured and included left ventricular mass index (LVMi), carotid intimamedia thickness (cIMT), carotidfemoral pulse wave velocity (cfPWV), central retinal arteriolar equivalent (CRAE) and albumin to creatinine ratio (ACR). RESULTS: Measures of sub-clinical TOD (cIMT, cfPWV and CRAE), associated stronger with perfusion pressure (all p < 0.001) than pulsatile pressure in unadjusted models. Stronger associations were found between cfPWV (adjusted R2 = 0.26), CRAE (adjusted R2 = 0.12) and perfusion pressure (all p ≤ 0.001) than pulsatile pressure independent of several non-modifiable and modifiable risk factors. CONCLUSIONS: In young, healthy adults, perfusion pressure is more strongly associated with subclinical TOD markers than pulsatile pressure. These findings contribute to the understanding of the development of early cardiovascular changes and may guide future intervention strategies.

Gynaecological cancer-related deaths in a tertiary hospital: A four-year retrospective review.

The aim of this study is to describe the profile, causes of death, and associated complications among women who died with a diagnosis of gynecological cancer during a four-year period in a gynae oncology unit in a tertiary hospital. The study is based on a retrospective review of clinical records of patients. There were 368 gynecological cancer admissions during the study period and 51 gynecological cancer-related deaths (13.8%); however, only 48 (13%) of the 51 files were available for analysis. The mean age of the women who died was 52.7 years (SD ±16.92). Most of the women who died were South African citizens (41, 85%), black (44, 91.7%) and unemployed (37, 77.1%). The most common comorbidities were hypertension and HIV which occurred at similar frequencies (20, 41.7%), followed by diabetes mellitus (7, 14,6%). The three most common cancers were cervical (18, 37.5%), ovarian (13, 27.1%), and endometrial (12, 25,0%). All women who died (48, 100%) had some form of cancer-related complications on admission to the hospital. The most common complication at presentation was obstructive uropathy (16, 31.3%) followed by ascites (11, 21.6%) and pleural effusion (8, 15.8%). Just less than half of the patients (22, 45.8%) received palliative treatment due to advanced-stage disease, and the remainder, (20, 41.6%) and (5, 10.4%) surgical and radiation therapy, respectively. The surgical procedure performed was staging laparotomy for ovarian and endometrial cancer (19, 95%) and radical hysterectomy and lymph node dissection for operatable cervical cancer (01, 5%). Forty-nine complications were recorded among the 20 women who underwent surgical treatment. The most common complications were sepsis and hemorrhage followed by organ injury.

Le but de cette étude est de décrire le profil, les causes de décès et les complications associées chez les femmes décédées avec un diagnostic de cancer gynécologique au cours d'une période de quatre ans dans une unité de gynécologie-oncologie d'un hôpital tertiaire. L'étude est basée sur une revue rétrospective des dossiers cliniques des patients. Il y a eu 368 admissions pour cancer décès liés au cancer gynécologique 51 décès d'origine gynécologique (13,8 %) ; cependant, seulement 48 (13 %) des 51 dossiers étaient disponibles pour analyse. L'âge moyen des femmes décédées était de 52,7 ans (ET ± 16,92). La plupart des femmes décédées étaient des citoyennes sud-africaines (41, 85 %), noires (44, 91,7 %) et au chômage (37, 77,1 %). Les comorbidités les plus courantes étaient l'hypertension et le VIH, qui survenaient à des fréquences similaires (20, 41,7 %), suivis du diabète sucré (7, 14,6 %). Les trois cancers les plus courants étaient le cancer du col de l'utérus (18, 37,5 %), de l'ovaire (13, 27,1 %) et de l'endomètre (12, 25,0 %). Toutes les femmes décédées (48, 100 %) ont présenté une forme ou une autre de complications liées au cancer lors de leur admission à l'hôpital. La complication la plus fréquente lors de la présentation était l'uropathie obstructive (16, 31,3 %), suivie de l'ascite (11, 21,6 %) et de l'épanchement pleural (8, 15,8 %). Un peu moins de la moitié des patients (22, 45,8 %) ont reçu un traitement palliatif en raison d'un stade avancé de la maladie, et le reste (20, 41,6 %) et (5, 10,4 %), une chirurgie et une radiothérapie, respectivement. L'intervention chirurgicale réalisée était une laparotomie de stadification pour un cancer de l'ovaire et de l'endomètre (19, 95 %) et une hystérectomie radicale et un curage ganglionnaire pour un cancer du col de l'utérus opérable (01, 5 %). Quarante-neuf complications ont été enregistrées parmi les 20 femmes ayant bénéficié d'un traitement chirurgical. Les complications les plus courantes étaient la septicémie et l'hémorragie, suivies de lésions organiques.

Associations between childbirth, gang exposure and substance use among young women in Cape Town, South Africa.

The prevalence and influence of gangs on adolescents and young adults remain a concern in Western Cape, South Africa-particularly as they have one of the largest gang presence. While less attention has been focused on young women, there is a need to elucidate the relationship between gang exposure and health behaviors, such substance use, in addition to understanding whether becoming a caregiver impacts this relationship. This study uses baseline data from 496 participants enrolled in a NIDA-funded R01 trial that recruited young women aged 16 to 19 who were out of school and reported recent alcohol or other drug use and sexual risk behavior. At enrollment, a risk behavior survey was administered, and urine drug screening was conducted. Multivariable logistic regression analyses were conducted to examine baseline associations between childbirth, a gang exposure index based on eight items, and positive drug screens of the most prevalent drugs in the Western Cape (marijuana, methaqualone, and methamphetamine). At enrollment, approximately 39% of the sample had a positive urine screen for marijuana, 17% for methaqualone, and 11% for methamphetamine. Additionally, 28% had ever given birth. While only 6% reported ever being a member of a gang, most reported exposure to gangs through their physical and social environments. For all three drugs, gang exposure was associated with statistically significantly higher odds of a positive screen. Every one-point increase in the gang exposure index was associated with a 31% increase in the odds of a positive marijuana screen (p < .001), a 26% increase for methaqualone (p = 0.005) and a 37% increase in the odds of a positive methamphetamine screen (p < .001). Ever given birth was associated with lower odds of marijuana use (adjusted odds ratio [AOR]: 0.63; 95% CI: 0.42-0.96), but it was not associated with methaqualone or methamphetamine use. The findings suggest that exposure to gangs through young women's social and physical environment is positively associated with drug use. Childbirth was also protective for marijuana use, indicating there may be something unique about this type of drug, such as one's ability to more easily stop use. Although very few young women reported gang membership, a majority reported some exposure, indicating the need to address how pervasive this exposure is and the potential risk.

Population-based prevalence of congenital defects in a routine sentinel site-based surveillance system in the Western Cape, South Africa.

BACKGROUND: Lack of data on the burden and scope of congenital disorders (CDs) in South Africa undermines resource allocation and limits the ability to detect signals from potentially teratogenic pregnancy exposures. METHODS: We used routine electronic data in the Western Cape Pregnancy Exposure Registry (PER) to determine the overall and individual prevalence of CD identified on neonatal surface examination at birth in the Western Cape, South Africa, 2016-2022. CD was confirmed by record review. The contribution of late (≤24 months) and antenatal diagnoses was assessed. We compared demographic and obstetric characteristics between women with/without pregnancies affected by CD. RESULTS: Women with a viable pregnancy (>22 weeks gestation; birth weight ≥ 500 g) (n = 32,494) were included. Of 1106 potential CD identified, 56.1% were confirmed on folder review. When internal and minor CD were excluded the prevalence of major CD identified on surface examination at birth was 7.2/1000 births. When missed/late diagnoses on examination (16.8%) and ultrasound (6.8%) were included, the prevalence was 9.2/1000 births: 8.9/1000 livebirths and 21.5/1000 stillbirths. The PER did not detect 21.5% of major CD visible at birth. Older maternal age and diabetes mellitus were associated with an increased prevalence of CD. Women living with/without HIV (or the timing of antiretroviral therapy, before/after conception), hypertension or obesity did not significantly affect prevalence of CD. CONCLUSIONS: A surveillance system based on routine data successfully determined the prevalence of major CD identified on surface examination at birth at rates slightly higher than in equivalent studies. Overall rates, modeled at ~2%, are likely underestimated. Strengthening routine neonatal examination and clinical record-keeping could improve CD ascertainment.

Injury mortality in South Africa: a 2009 and 2017 comparison to track progress to meeting sustainable development goal targets.

BACKGROUND: Injuries, often preventable, prompted urgent action within the United Nations' 2030 Agenda for Sustainable Development Goals (SDGs) to improve global health. South Africa (SA) has high rates of injury mortality, but accurate reporting of official national data is hindered by death misclassification. OBJECTIVE: Two nationally representative surveys for 2009 and 2017 are utilised to assess SA's progress towards SDG targets for violence and road traffic injuries, alongside changes in suicide and under-5 mortality rates for childhood injuries, and compare these estimates with those of the Global Burden of Disease for SA. METHODS: The surveys utilised multi-stage, stratified cluster sampling from eight provinces, with mortuaries as primary sampling units. Post-mortem files for non-natural deaths were reviewed, with additional data from the Western Cape. Age-standardised rates, 95% confidence intervals (CIs), and incidence rate ratios (IRRs) were calculated for manner of death rate comparisons and for age groups. RESULTS: The all-injury age-standardised mortality rate decreased significantly between 2009 and 2017. Homicide and transport remained the leading causes of injury deaths, with a significant 31% decrease in road traffic mortality (IRR = 0.69), from 36.1 to 25.0 per 100 000 population. CONCLUSIONS: Despite a reduction in SA's road traffic mortality rate, challenges to achieve targets related to young and novice drivers and male homicide persist. Achieving SA's injury mortality SDG targets requires comprehensive evaluations of programmes addressing road safety, violence reduction, and mental well-being. In the absence of reliable routine data, survey data allow to accurately assess the country's SDG progress through commitment to evidence-based policymaking.

Main findings The significant decrease in South Africa's injury mortality rates between 2009 and 2017 appears to largely be driven by the significant 31% decrease in road traffic mortality rates.Added knowledge The 2009 and 2017 survey comparison provides an enhanced understanding of the profile for injury-related deaths, compared to misclassified vital statistics data, to track progress towards reaching Sustainable Development Goals.Global health impact for policy and action The significant reduction in road traffic mortality across all age groups suggests South Africa is making progress towards Sustainable Development Goal Target 3.6 for road safety. However, reducing violence, suicide, and newborn and under-5 injury mortality requires more targeted interventions.

Prevalence and risk of burnout among HIV service providers in South Africa and Zambia: findings from the HPTN 071 (PopART) trial.

BACKGROUND: In the high disease burden and resource-constrained contexts of sub-Saharan Africa (SSA), health workers experience a range of psychosocial stressors that leave them vulnerable to developing burnout, which can reduce service quality and negatively impact their own health and wellbeing. As universal testing and treatment (UTT) for HIV scales up across SSA, we sought to understand the implications of this human resource-intensive approach to HIV prevention to inform decision-making about health workforce staffing and support needs. METHODS: Using the Maslach Burnout Inventory-Human Services Survey (MBI-HSS), we assessed the prevalence of three domains of burnout-emotional exhaustion, depersonalization, and personal accomplishment-among three cadres of health workers delivering health services in areas receiving a UTT intervention in Zambia and South Africa. These cadres included health facility workers (n = 478), community health workers (n = 159), and a study-specific cadre of community HIV care providers (n = 529). We used linear regression to assess risk factors associated with emotional exhaustion, the only domain with sufficient variation in our sample. RESULTS: The MBI-HSS was completed by 1499/2153 eligible participants (69.6% response rate). Less than 1% of health workers met Maslach's definition for burnout. All groups of health workers reported lower levels of emotional exhaustion than found in previous studies of this type (mean score scores ranged from 10.7 to 15.4 out of 54 across health cadres). Higher emotional exhaustion was associated with higher educational attainment (ßadj = 2.24, 95% CI 0.76 to 3.72), greater years providing HIV services (ßadj = 0.20, 95% CI 0.03 to 0.36), and testing negative for HIV at last HIV test (ßadj = - 3.88 - 95% CI 5.69 to - 2.07). Working as a CHW was significantly associated with lower emotional exhaustion (ßadj = - 2.52, 95% CI - 4.69 to - 0.35). Among all health workers, irrespective of HIV status, witnessing stigmatizing behaviors towards people living with HIV among their co-workers was associated with significantly increased emotional exhaustion (ßadj = 3.38, 95% CI 1.99 to 4.76). CONCLUSIONS: The low level of burnout detected among health workers is reassuring. However, it remains important to assess how UTT may affect levels of emotional exhaustion among health workers over time, particularly in the context of emerging global pandemics, as burnout may impact the quality of HIV services they provide and their own mental health and wellbeing. Interventions to reduce HIV stigma in health facilities may protect against emotional exhaustion among health workers, as well as interventions to increase mindfulness and resilience among health workers at risk of burnout. Trial registration ClinicalTrials.gov number: NCT01900977.

Geographical migration and fitness dynamics of Streptococcus pneumoniae.

Streptococcus pneumoniae is a leading cause of pneumonia and meningitis worldwide. Many different serotypes co-circulate endemically in any one location1,2. The extent and mechanisms of spread and vaccine-driven changes in fitness and antimicrobial resistance remain largely unquantified. Here using geolocated genome sequences from South Africa (n = 6,910, collected from 2000 to 2014), we developed models to reconstruct spread, pairing detailed human mobility data and genomic data. Separately, we estimated the population-level changes in fitness of strains that are included (vaccine type (VT)) and not included (non-vaccine type (NVT)) in pneumococcal conjugate vaccines, first implemented in South Africa in 2009. Differences in strain fitness between those that are and are not resistant to penicillin were also evaluated. We found that pneumococci only become homogenously mixed across South Africa after 50 years of transmission, with the slow spread driven by the focal nature of human mobility. Furthermore, in the years following vaccine implementation, the relative fitness of NVT compared with VT strains increased (relative risk of 1.68; 95% confidence interval of 1.59-1.77), with an increasing proportion of these NVT strains becoming resistant to penicillin. Our findings point to highly entrenched, slow transmission and indicate that initial vaccine-linked decreases in antimicrobial resistance may be transient.

Maternal exposure to heat and its association with miscarriage in rural KwaZulu-Natal, South Africa: A population-based cohort study.

BACKGROUND: We sought to improve the current understanding of how climate change impacts women's reproductive health in sub-Saharan Africa. OBJECTIVES: We investigated the relationship between maternal heat exposure and miscarriage (pregnancy ending before 20 weeks gestation) in a South African setting. DESIGN: Population-based cohort study. METHODS: Our study involved data for pregnancies collected via a health and demographic surveillance system in rural KwaZulu-Natal, South Africa between 2012 and 2016. Data from the South African Weather Service were used to compute maternal exposure to heat during the following time windows for each pregnancy: during the month preceding conception (T1) and during the week preceding the study outcome (either a miscarriage or no miscarriage, T2). Heat exposure was operationalized as a continuous variable and defined as the number of days that a mother was exposed to a mean daily temperature of > 26.6°C (A "hot day," equivalent to a mean daily temperature of > 80°F) during T1 or T2. Binary logistic regression was used to investigate the relationship between maternal heat exposure and miscarriage. RESULTS: A total of 105/3477 pregnancies included in our analysis ended in miscarriage (3.0%). Each additional hot day during T1 was associated with a 26% higher odds of miscarriage (odds ratio: 1.26; 95% confidence interval: 1.15-1.38). No significant associations were observed between maternal heat exposure during T2 and the odds of miscarriage (odds ratio: 0.94, 95% confidence interval: 0.73-1.20). The relationship between maternal heat exposure during T1 and the odds of miscarriage was J-shaped. CONCLUSION: There is a clear relationship between maternal heat exposure during the month preceding conception and miscarriage in our sub-Saharan African setting. Given the lack of feasible strategies to reduce pregnancy loss associated with prevailing high temperatures in sub-Saharan Africa, progressive climate change will likely exacerbate existing challenges for women's reproductive health in this region.

Cost of mate choice: Changing patterns of global age disparity in marriage and their consequences to women's health including maternal mortality and menopause.

BACKGROUND: Consistent across cultures and throughout time is the male preference for younger females. Given its prevalence, the mate choice theory proposes that age-disparate relationships may have contributed to the evolution of maternal mortality and menopause. OBJECTIVES: The objective is to document evidence for age disparity in marriage from past and present populations and evaluate their relevance to maternal mortality and menopause. DESIGN: Cross-sectional data were collected from various regions and time points, ranging from the Roman era to the current decade. METHODS: To analyze both the age disparity in marriage and age at marriage, data were collected from Ancestry.ca for Quebec, Massachusetts, India, South Africa, and England and Wales. Additional data were taken from the United Nations as a more recent and comprehensive source. To analyze the relationships between age disparity in marriage and different social factors, data on gross domestic product, maternal mortality rates, fertility, primary school enrollment, child marriage rates, and percentage of women in the total labor force were collected from the World Health Organization, World Bank, and United Nations International Children's Emergency Fund. RESULTS: The results showed that males were significantly older than females at first marriage in all populations and time frames sampled, supporting the assumption underlying the mate choice theory. Maternal mortality rates were strongly associated with age-disparate relationships, increasing by 275 per 100,000 live births for each additional year in the age disparity. CONCLUSION: The results from this study provide support for the assumption underlying the mate choice theory of maternal mortality and menopause.

Changing patterns of global age disparity in marriage provide support for the mate choice theory of menopause, raising the possibility of a gradual shift in delayed reproduction and delayed menopause. Living things have inherent capacity to survive and reproduce until they die, with one exception: humans. Women go through menopause while men remain fertile. Among the many explanations offered for the origin of menopause, grandmother hypothesis is the leading one. Being too old to reproduce, it is argued, grandmothers stop reproducing and make up for the loss of fitness through helping (grand mothering) their grand offspring. There are two problems with this theory: first, grand mothering and menopause need not be connected, and second, grandmothers cannot be simultaneously too old to reproduce and not too old to be able to gather resources to make up for their loss of fitness. We proposed a mate choice theory of menopause which posits that human mating system is non-random, that is, males have preference for younger females, depriving older females from reproduction and allowing deleterious fertility mutations to accumulate giving rise to menopause. Male preference for younger females is consistent across cultures and dominates all social relations affecting mate choice including monogamy, serial monogamy, widowers remarrying, polygamy, harem, and others. In this study, we wanted to test if male preference for younger females has been widespread through time. We collected data on age disparity in marriage from past and present populations, from Roman era to the current decade, and evaluated their relevance to the origin of maternal mortality and menopause. The results showed that males were significantly older than females at first marriage in all populations and time frames sampled, supporting the assumption underlying the mate choice theory of menopause. Maternal mortality rates were strongly associated with age­disparate relationships, increasing by 275 per 100,000 live births for each additional year in the age disparity. Through repeated cycles of widowers marring younger women, maternal mortality would have functioned as a reinforcer of the origin of menopause.

Poor Health Behaviour in Medical Students at a South African University: A Cross-Sectional Survey Study.

BACKGROUND: Personal health behaviours and lifestyle habits of health professionals influence their counselling practices related to non-communicable diseases (NCDs). There are limited data on the prevalence of unhealthy lifestyle habits among medical students and the impact of acquired health knowledge throughout the curriculum. The aim of this study was to determine and compare the prevalence of modifiable behavioural NCD risk factors of medical students in different academic years at a South African tertiary institution. METHODS: A cross-sectional observational study of 532 consenting medical students was conducted. Participants completed five online questionnaires regarding lifestyle behaviours (physical activity, dietary habits, smoking, alcohol consumption and sleep). RESULTS: Lifestyle-related risk factors with the highest prevalence were poor sleep quality (66.0%), low levels of habitual physical activity (55.8%) and low-to-moderate diet quality (54.5%). There were no differences between academic years for all risk factors measured. Over 60% of the cohort had two or more NCD risk factors and this prevalence did not differ across the degree program with the acquisition of more health knowledge. CONCLUSION: Medical students have a high prevalence of poor sleep quality, low levels of physical activity and low-to-moderate diet quality, which does not appear to change over the course of their academic career. Sleep hygiene, regular physical activity and healthy nutrition should be targeted in intervention programmes and be more prevalent in the medical curriculum.

Resilience in the time of crisis: A review of the maternal, perinatal and reproductive health effects of COVID-19 in South Africa.

BACKGROUND: The COVID-19 pandemic had a profound effect on the health sector globally and in South Africa (SA). OBJECTIVE: To review the effects of COVID-19 on maternal, perinatal and reproductive health outcomes and service utilisation in SA. METHODS: Three routine national data collection systems were sourced: the District Health Information System, the Saving Mothers reports of the National Committee on Confidential Enquiry into Maternal Deaths and the Saving Babies reports from the National Perinatal Morbidity and Mortality Committee using data from the Perinatal Problem Identification Program. RESULTS: There were 35% and 8% increases in maternal and stillbirth mortality rates, respectively, in 2020 and 2021, which correlated with the COVID-19 waves. However, in 2022, rates returned to pre-COVID levels. Antenatal visits and facility births showed little change, but there was a shift to more rural provinces. The use of oral and injectable contraceptives and termination of pregnancy services decreased markedly in 2020 and 2021, with a sustained shift to long-acting reversible contraceptives. The increase in maternal deaths was predominantly due to COVID-19 respiratory complications, but also an increase in obstetric haemorrhage. Stillbirths increased significantly (10%) for birthweights between 2 000 g and 2 499 g, categorised mostly as unexplained stillbirths or preterm labour, but no increase in neonatal deaths was observed. Administrative avoidable factors increased by 24% in the 2020 - 2022 triennium, but there was no increase in patient/community level or healthcare provider-related avoidable factors during the pandemic years. CONCLUSION: COVID-19 caused a marked increase in maternal death and stillbirth rates in 2020 and 2021 due to both direct effects of the virus and indirect effects on functioning of the health system. The continued, although modified, health-seeking behaviour of women and the rapid return to pre-COVID-19 mortality rates demonstrates enormous resilience in women and the health system.