Publications by authors named "Kennedy Addo"

Infectious animal diseases represent a major constraint to livestock productivity, food security and wellbeing in many developing countries. To mitigate these impacts, farmers frequently use antimicrobials without professional advice, potentially yielding drug residues in livestock products and the food chain, as well as resistant antimicrobial genes. Recent studies identified Contagious Bovine Pleuropneumonia (CBPP) and Peste des Petits Ruminants (PPR) as the diseases most negatively affecting ruminant livestock productivity and farmers' wellbeing in Ghana.

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Introduction: Information and Communication Technology (ICT) with emphasis on Electronic Health Records (EHR) is growing steadily in most developing countries including Ghana. This is considered the impetus for achieving quality service delivery. The study is intended to evaluate the implementation and utilization of health information systems in health care delivery.

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Background: To meet the WHO target of eradicating yaws by 2030, highly sensitive and specific diagnostic tools are needed. A multiplex Treponema pallidum-Haemophilus ducreyi loop-mediated isothermal amplification (TPHD-LAMP) test holds promise as a near-patient diagnostic tool for yaws and H ducreyi. We conducted a prospective evaluation in Cameroon, Côte d'Ivoire, Ghana, and the Republic of the Congo to determine the diagnostic accuracy of the TPHD-LAMP test, as well as to assess its acceptability, feasibility, and cost.

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Article Synopsis
  • The study analyzed the prevalence of co-infections with parasites in newly diagnosed pulmonary tuberculosis (TB) patients compared to non-TB participants in Bobo-Dioulasso from 2019 to 2021, finding a higher frequency of parasitic infections in the TB group (69.5% vs. 55.7%).
  • Protozoal infections, especially by Entamoeba spp. and Cryptosporidium spp., were significantly more prevalent in TB+ patients, indicating a strong link between TB and certain types of parasites.
  • Factors such as illiteracy, smoking, and inadequate hygiene practices (like not washing hands after defecation) were identified as potential contributors to parasite infections, suggesting a need for improved health
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The effect of helminthiasis on host immunity is a neglected area of research, particularly in tuberculosis (TB) infection. This study aimed to evaluate the effect of helminthiasis on immunological and haematological parameters in newly diagnosed TB patients in Bobo-Dioulasso. After all biological analyses, we formed three subpopulations: group 1 ( = 82), as control, were participants without helminthic or complex infection (-/Helm-), group 2 ( = 73) were TB patients without helminthic infection (+/Helm-), and group 3 ( = 22) were TB patients with helminthic infection (+/Helm+).

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Article Synopsis
  • - Yaws, caused by the bacterium Treponema pallidum ssp. pertenue, is a major health issue in tropical West Africa and the South Pacific, particularly impacting children in areas lacking hygiene and sanitation.
  • - A study in Ghana, Cameroon, and Côte d'Ivoire found diverse beliefs about yaws transmission among locals, with many attributing it to germs or contaminated water, while some linked it to witchcraft, and a low percentage recognized person-to-person contact as a method of transmission.
  • - Most participants preferred seeking care from hospitals or healthcare professionals if diagnosed with yaws, but there was a significant reliance on traditional healers in Côte d'Ivoire, highlighting the necessity for increased community education and awareness
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  • * By analyzing 38 samples using advanced sequencing methods, researchers discovered a wide variety of bacteria present, with no single species being found in every sample.
  • * The findings suggest that the causes of these ulcers are complex and multifactorial, highlighting the need for deeper research into the bacteria involved to improve diagnosis and treatment options in affected regions.
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Background: Unregulated and inappropriate antimicrobial use are major contributors to the evolution of antimicrobial resistance worldwide. It is important to monitor and collect data on the use of antibiotics at health facilities and in the general population in order to support antimicrobial stewardship programs.

Methods: As part of a gonorrhea surveillance study that was conducted from June 2012 to Jan 2018, we administered a questionnaire to elicit information on the types of antimicrobials used by individuals to treat symptoms of a gonorrhea infection prior to presenting at five health facilities in Southern Ghana.

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Introduction: Sustainable livestock production remains crucial for attainment of food security globally and for safeguarding the livelihoods of many households in low- and -middle income countries. However, the high prevalence of infectious livestock diseases, coupled with inadequate provision and adoption of effective control measures, leads to reduced livestock productivity, increased animal mortalities, and emergence of antimicrobial resistant pathogens. This study sought to assess the management strategies employed by farmers for priority diseases affecting their animals and the utilization and performance of veterinary services.

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Introduction: Livestock vaccination coverage rates remain low in many lower and middle income countries despite effective vaccines being commonly available. Consequently, many preventable infectious livestock diseases remain highly prevalent, causing significant animal mortalities and threatening farmers' livelihood and food security. This study sought to assess farmers' maximum willingness to pay (WTP) for contagious bovine pleuropneumonia (CBPP), and peste-des-petits-ruminants (PPR) vaccination of cattle, and sheep and goats, respectively.

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Introduction: Livestock production is a key livelihood source for many people in developing countries. Poor control of livestock diseases hamper livestock productivity, threatening farmers' wellbeing and food security. This study estimates the effect of livestock mortalities attributable to disease on the wellbeing of livestock farmers.

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Introduction: Livestock diseases are a major constraint to agricultural productivity, frequently causing significant livelihood losses for farmers, and negatively affecting public food safety and security. Vaccines provide an effective and profitable means for controlling most infectious livestock diseases, but remain underutilized. This study sought to assess the barriers and determinants of vaccination utilization for priority livestock diseases in Ghana.

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This study sought to investigate microbial quality and antimicrobial resistance of bacteria species from Ready-to-Eat (RTE) food, water, and vendor palm swab samples. Between 2019 and 2020, RTE food, water and vendor palm swab samples were collected from food vending sites in Accra, Ghana. Samples were cultured and confirmed using the Matrix-assisted laser desorption ionization-time of flight mass spectrometry (MALDI-TOF).

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Over the past decade, there have been increasing reports of non-tuberculous mycobacteria (NTM) species being implicated in tuberculosis (TB) treatment failure or misdiagnosed as TB. Inadequate awareness of NTM pulmonary disease among healthcare workers (HCWs) may contribute to a low index of suspicion for patients presenting to their hospitals. In this study, we assessed the awareness of NTM pulmonary disease (NTM-PD) among front desk HCWs in Northern Tanzania.

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Background: The detection of acid-fast bacilli in extrapulmonary tissue samples is challenging due to its paucibacillary nature. The present study assessed the utility of immunohistochemistry (IHC) using anti- antibody (ab905) for detecting the presence of mycobacterial antigens in archived formalin-fixed paraffin-embedded (FFPE) tissues.

Methods: FFPE tissues [surgical biopsies (n = 32) and post-mortem tissues (n = 8)] from clinically and histologically suggestive extrapulmonary tuberculosis (EPTB) cases at the Korle Bu Teaching Hospital, Accra, Ghana from 2015 to 2020 were stained with IHC (anti- antibody) and Ziehl-Neelsen (ZN) stain.

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Objectives: To determine the prevalence and risk factors for latent tuberculosis infection (LTBI) among three high-risk groups - household contacts of TB index cases, healthcare workers and slaughterhouse workers - in Bobo-Dioulasso, Burkina Faso.

Methods: Participants were recruited to this cross-sectional study from March to July 2020 after giving informed consent. Sociodemographic, clinical and biological data were collected using a structured questionnaire.

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Agriculture in general, and livestock production in particular, serve as a livelihood source for many people in sub-Saharan Africa (SSA). In many settings, lack of control of infectious diseases hampers livestock productivity, undermining the livelihood of rural populations. This scoping review sought to identify veterinary interventions previously evaluated as well as their relative effectiveness in controlling infectious livestock diseases.

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Background: The emergence of antimicrobial resistant bacteria in food producing animals is of growing concern to food safety and health. Staphylococci are common inhabitants of skin and mucous membranes in humans and animals. Infections involving antibiotic resistant staphylococci are associated with increased morbidity and mortality, with notable economic consequences.

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Objectives: This study sought to determine the genetic diversity and drug resistance profiles of complex (MTBC) isolates from extrapulmonary tuberculosis (EPTB) patients in Ghana, and their associated immune responses.

Methods: Spoligotyping was performed on 102 MTBC isolates from EPTB patients. Lineages/sub-lineages were assigned by comparing spoligotyping patterns primarily with the SITVIT2 database and subsequently with the TB-Lineage online tool for unknown isolates in SITVIT2.

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Food from animal sources continues to be a significant food safety hazard. This study determined the microbial quality and safety of beef along beef value chains with case studies in the Ashaiman Municipality of Ghana. Raw beef samples were collected from four slaughter slabs in the Ashaiman Municipality and analyzed using standard microbiological methods to determine the quality and prevalence of specific pathogens, including species, (), and species, as well as (), (), and ().

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Objectives: The aim was to isolate and identify the species of mycobacteria causing tuberculous-like (TB-like) lesions in cattle in Ghana.

Methods: Between 2019 and 2020, 68 bovine tissue samples with TB-like lesions, identified during post slaughter examination, were obtained from four major abattoirs close to border towns in Ghana. The samples were cultured on Lowenstein-Jensen medium.

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Introduction: Diarrhoea accounts for high morbidity and mortality in children and adults worldwide. Extended Spectrum Beta-Lactamase-Producing Enterobacteriaceae (ESBL-PE) and Diarrhoeagenic Escherichia coli (DEC) contribute to prolonged hospitalization because of their resistance and virulence properties aiding in the spread of diarrhoeal disease and delayed treatment.

Aim: To determine DEC and the antimicrobial resistance of ESBL-PE isolated among diarrhoea patients attending two health facilities in Ghana.

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Article Synopsis
  • The study aimed to evaluate the safety of retail poultry by examining the prevalence of antibiotic resistance in a key intestinal bacterium, focusing on samples taken from farms and retail outlets in Accra, Ghana.
  • Raw chicken (25 samples) and poultry fecal matter (50 samples) were collected, analyzed using various laboratory techniques, and tested for antibiotic susceptibility.
  • Results showed significant levels of antimicrobial resistance, especially in fecal samples, raising public health concerns and underscoring the need for stricter surveillance and safety measures in poultry production to prevent the spread of resistant bacteria through the food supply.
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Background: Rifampicin- or multidrug-resistant (RR/MDR) complex (MTBC) strains account for considerable morbidity and mortality globally. WGS-based prediction of drug resistance may guide clinical decisions, especially for the design of RR/MDR-TB therapies.

Methods: We compared WGS-based drug resistance-predictive mutations for 42 MTBC isolates from MDR-TB patients in Tanzania with the MICs of 14 antibiotics measured in the Sensititre™ MycoTB assay.

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Introduction: Yaws, caused by the bacterium subsp. is a neglected tropical disease targeted for eradication by 2030. Improved diagnostics will be essential to meet this goal.

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