Clostridioides difficile Infection and Testing Rates in South Africa: A multicentre study, 2017-2020.

Objectives: To describe Clostridioides difficile infection (CDI) rates and testing practices, at three tertiary/quaternary hospitals in South Africa (SA) for the period 2017 to 2020.

Methods: A retrospective laboratory record review of all C. difficile testing at the Charlotte Maxeke Johannesburg Academic Hospital (CMJAH), Tygerberg Hospital (TBH) and Inkosi Albert Luthuli Central Academic Hospital (IALCH) was performed.

A quantitative study to evaluate the controls and accountability measures in place to alleviate the leadership and governance challenges impacting the realization of the National Health Insurance (NHI) in South Africa.

Objectives: Governance and leadership are regarded as the most crucial aspects in delivering quality health care, and yet they are arguably the most complex functions of any health system. The objective of the study was to investigate the structural problems affecting the implementation of the National Health Insurance (NHI) and address the challenges affecting the NHI building blocks. Further objective of the study was to evaluate if there were appropriate controls and accountability measures in leadership and governance to inform the development of a workable model for the implementation of the NHI in South Africa.

"The COVID-19 pandemic in BRICS: Milestones, interventions, and molecular epidemiology".

Brazil, Russia, India, China, and South Africa (BRICS) are a group of developing countries with shared economic, healthcare, and scientific interests. These countries navigate multiple syndemics, and the COVID-19 pandemic placed severe strain on already burdened BRICS' healthcare systems, hampering effective pandemic interventions. Genomic surveillance and molecular epidemiology remain indispensable tools for facilitating informed pandemic intervention.

Preschool Vision Screening and Policy: Availability, Awareness and Perceptions of Stakeholders in Selected Locations in Harare and Mashonaland East Provinces.

Background: This study aimed to determine the availability, awareness and perceptions of preschool vision screening (PSVS) and policies among stakeholders in Zimbabwe.

Methods: A descriptive cross-sectional survey was carried out, and a multi-stage sampling was used to select the schools from private and public schools. The study involved stakeholders (parents/guardians, teachers, principals, proprietors/owners and administrators) and data was collected using a validated questionnaire.

The impact of antimicrobial stewardship interventions on appropriate use of surgical antimicrobial prophylaxis in low- and middle-income countries: a systematic review.

Background: Surgical antimicrobial prophylaxis (SAP) is an effective infection prevention strategy used to reduce postoperative surgical site infection. Inappropriate use of SAP is a concern in low-middle-income countries (LMICs) due to increased mortality risks, adverse reactions, re-admission rates and length of hospital stay. Antimicrobial Stewardship Programs (ASP) have been shown to be effective in improving the appropriate use of antibiotics including the use of SAP.

THE EFFECTS OF TECHNICAL STEPS USED IN EXISTING SANITATION HELMINTH TEST METHODS ON ASCARIS SUUM EGG RECOVERY FROM PIG FECES.

Many technical aspects are associated with helminth egg isolation and enumeration that affect how efficiently eggs are recovered from samples. This study investigated Ascaris egg recoverability when samples were washed with or without pressure, and from different sample types (water, effluent, ventilated improved pit latrine [VIP], urine diversion dry toilet [UDDT], dried, fatty, and septic tank sludges, and soil) when processed with water, ammonium bicarbonate, and 7X®. We also looked at egg recovery after flotation with zinc sulfate, magnesium sulfate, and sodium nitrate at specific gravities of 1.

Expediting pathogen genomics adoption for enhanced foodborne disease surveillance in Africa.

The role of genomics in public health surveillance has been accentuated by its crucial contributions during the COVID-19 pandemic, demonstrating its potential in addressing global disease outbreaks. While Africa has made strides in expanding multi-pathogen genomic surveillance, the integration into foodborne disease (FBD) surveillance remains nascent. Here we highlight the critical components to strengthen and scale-up the integration of whole genome sequencing (WGS) in foodborne disease surveillance across the continent.

SARS-CoV-2 Infections in a Triad of Primary School Learners (Grades 1-7), Their Parents, and Teachers in KwaZulu-Natal, South Africa: Protocol for a Cross-Sectional and Nested Case-Cohort Study.

Background: In low- and middle-income countries (LMICs) such as South Africa, there is paucity of data on SARS-CoV-2 infections among children attending school, including seroprevalence and transmission dynamics.

Objective: This pilot study aims to assess (1) the prevalence of self-reported or confirmed SARS-CoV-2 prior infections, COVID-19 symptoms (including long COVID), seroprevalence of SARS-CoV-2 antibodies, and general/mental health, (2) longitudinal changes in SARS-CoV-2 seroprevalence, and (3) SARS-CoV-2 acute infections, immune responses, transmission dynamics, and symptomatic versus asymptomatic contacts in a unique cohort of unvaccinated primary school learners, their parents, teachers, and close contacts in semirural primary school settings.

Methods: Learners (grades 1-7) from primary schools in KwaZulu-Natal, South Africa, their parents, and teachers will be invited to enroll into the COVID kids school study (CoKiDSS).

Herpes simplex virus type 2 in sub-Saharan Africa and the potential impact of helminth immune modulation.

Herpes simplex virus type 2 (HSV-2) and helminth infections are among the most widespread infectious diseases in sub-Saharan Africa (SSA). Helminths are known to modulate host immune responses and consequently impact the severity and outcomes of unrelated diseases, including allergies, autoimmune conditions, and infectious diseases. In this way, helminths may modulate essential immune responses against HSV-2 during co-infection and may alter susceptibility to and pathology of HSV-2.

Contribution of fish to food and nutrition security in Southern Africa: challenges and opportunities in fish production.

This study investigated the role of fish in addressing food and nutrition security challenges in Southern Africa, focusing on 10 countries including Angola, Zambia, Malawi, Mozambique, Namibia, Botswana, Zimbabwe, Lesotho, Eswatini, and South Africa. It examined the current state of food and nutrition security, fish production, and fish consumption patterns. Additionally, the study investigated the challenges and opportunities to enhance fish production in these countries thereby enhancing food and nutrition security.

(ragweed) pollen - A growing aeroallergen of concern in South Africa.

Background: Ragweed is an invasive, highly allergenic weed predicted to expand its habitat with warming global temperatures. Several species have been identified in South Africa for well over a century; however, its presence remained undetected by allergists and aerobiologists until the development of an extensive aerospora monitoring system across South African urban areas since 2019. This paper presents the inventory of preliminary investigation of the airborne pollen and the taxonomic identification of ragweed species.

Binding kinetics of highly mutated HIV-1 subtype C protease inhibition by Lopinavir and Darunavir in the face of altered conformational dynamics.

Highly mutated HIV-1 protease (PR) compromises the efficacy of lopinavir (LPV) and darunavir (DRV) used to formulate salvage regimens in HIV/AIDS management. Here, we report the kinetics of inhibition of lopinavir (LPV) and darunavir (DRV) on highly mutated South African HIV-1 subtype C PR obtained from clinical isolates. The wild-type and mutant South African HIV-1 subtype C PR were cloned and purified.

The potential for AI to revolutionize conservation: a horizon scan.

Artificial Intelligence (AI) is an emerging tool that could be leveraged to identify the effective conservation solutions demanded by the urgent biodiversity crisis. We present the results of our horizon scan of AI applications likely to significantly benefit biological conservation. An international panel of conservation scientists and AI experts identified 21 key ideas.

Multi-epitope Based Peptide Vaccine Candidate Against Infection From Rhoptry-Associated Protein 1 (RAP-1) Antigen Using Immuno-Informatics: An Approach.

Objective: Babesiosis is a significant haemoparasitic infection caused by apicomplexan parasites of the genus . This infection has continuously threatened cattle farmers owing to its devastating effects on productivity and severe economic implications. Failure to curb the increase of the infection has been attributed to largely ineffective vaccines.

Evaluation of Treatment Outcomes Among Individuals on Highly Active Antiretroviral Therapy in KwaZulu-Natal, South Africa.

Despite access to antiretroviral therapy (ART), South Africa has a high human immunodeficiency virus (HIV) burden. Treatment outcomes among individuals on highly active ART (HAART) in KwaZulu-Natal, with a higher incidence of HIV, are not fully known. This study evaluated the impact of HAART outcomes and identified and analyzed the factors associated with the outcomes in people living with HIV and AIDS (PLWHA) in the high-incidence region of KwaZulu-Natal Province, South Africa.

Intellectual property issues for open science practices in genomic-related health research and innovation in Africa.

This paper considers the applicability and implications of intellectual property rights (IPRs) for open science practices in the context of genomic-related health research and innovation in Africa. The first part provides a brief background of the gaps in genomics and health research in Africa, highlighting the possible role of open science in facilitating collaborative research to address the peculiar health needs of the continent. The second part examines intellectual property protection in genomic-related health research and innovation in Africa, outlining some of the existing legal instruments and policies guiding the application of IPRs, focusing on patents and copyrights.

Association between Childhood Trauma, Mental Health Symptoms and Adherence Among Youth Living with HIV in Botswana.

Background: People living with HIV experience traumatic incidents at higher rates than the general population; and research has documented significant association between trauma exposure and the development of mental disorders. Mental health problems have a a negative impact on anti-retroviral treatment adherence. All of these psychosocial concerns play a role in potentially increasing HIV transmission to sexual partners resulting in increased incidence rates.

Using HIV and Hepatitis C Molecular Epidemiology to Investigate Assisted Partner Services Recruitment Among People Who Inject Drugs in Kenya.

Sexual and/or injecting partners of people who inject drugs (PWID) may have an elevated risk of HIV infection either from sharing a transmission network or an epidemiological environment. We estimated the degree of similarity between HIV and hepatitis C (HCV) sequences from PWID and their partners to assess whether partner-based recruitment identifies sexual or injecting partners within transmission networks. We used assisted partner services (APS) to recruit sexual and injecting partners of PWID living with HIV in Kenya and evaluated trends in the TN93 distances (an adjusted measure of sequence similarity) of the HIV-1 and HCV sequences from partner pairs.

Bio-Inspired Polymeric Solid Lipid Nanoparticles for siRNA Delivery: Cytotoxicity and Cellular Uptake In Vitro.

Nanomedicine has introduced strategies that provide precise diagnosis and treatment with fewer side effects than traditional therapies. Treatments for neurodegenerative disorders, including Parkinson's disease, are palliative, necessitating an innovative delivery system with a curative function. This study investigated a solid lipid nanoparticle (SLNP) system's ability to bind and safely deliver siRNA in vitro.

Optimization of Setpoint Conditions for Enhanced Biofabrication of Silver Nanoparticles Using Extracts.

This study investigated the optimization of setpoint conditions used for the enhanced biofabrication of silver nanoparticles (H.C-AgNPs) using extracts. A Box-Behnken Design (BBD) model was used to evaluate the effects of reaction time, temperature, an extraction volume, and a 0.

Photosynthetic Activity Measured In Situ in Microalgae Cultures Grown in Pilot-Scale Raceway Ponds.

The microalga sp. (Chlorophyceae) was cultured in a raceway pond (RWP) placed in a greenhouse. The objective of this case study was to monitor the photosynthesis performance and selected physicochemical variables (irradiance, temperature, dissolved oxygen concentration) of microalgae cultures in situ at various depths of RWP.

Probing the anticancer activities of facial trioxorhenium and tricarbonylrhenium compounds with heterocyclic ligands.

The cytotoxicity of four rhenium compounds: fac-[ReO(impy)CH] (1) (impy = 2-(1H-imidazole-2-yl)pyridine), fac-[Re(CO)(bzimpy)Cl] (2) (bzimpy = 2-(2-pyridyl)benzimidazole), fac-[Re(CO)(bibzimpy)Cl] (3) (bibzimpy = 2,6-bis(2-benzimidazolyl)pyridine) and fac-[Re(CO)(impy)Cl] (4) was assessed against cancer cell lines, namely, the cervical hormone-responsive HeLa and the triple-negative breast cancer (TNBC) HCC70 lines versus a non-tumorigenic control breast epithelial cell line, MCF12A. A rare facial trioxorhenium(VII) compound 1 was characterized via various physicochemical techniques. The rhenium compounds 1-4 were, in general, more cytotoxic to HeLa cells, compared to the TNBC HCC70 line, displaying half maximal inhibitory concentration (IC) values in the micromolar range, however, the compounds were not convincingly selective for cancer cells over non-cancerous cells.