Publications by authors named "Adane Mihret"

Introduction: Tuberculosis (TB) remains the most common opportunistic infection and leading cause of death among individuals living with HIV/AIDS in Ethiopia. Its significant impact on morbidity and mortality underscores the crucial link between these two diseases. While the advent of antiretroviral therapy (ART) has led to a dramatic decline in mortality rates among HIV/AIDS patients, TB continues to pose a substantial threat.

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Background: Klebsiella bacterial strains harboring Extended-Spectrum Beta-Lactamase (ESBL) enzymes are the primary culprits behind neonatal sepsis globally. These strains significantly impact clinical outcomes due to their multi-drug resistance patterns in local healthcare settings. In response to this spiraling threat, we studied the prevalence and clinical implications of ESBL-encoding genes in neonates hospitalized with confirmed sepsis.

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Article Synopsis
  • Healthcare in low- and middle-income countries is facing challenges due to the rise of multidrug-resistant bacteria, leading to increased illness and death.
  • A study conducted in Ethiopia identified 74 bacterial isolates from sepsis patients across four hospitals, revealing significant antimicrobial resistance and clonal patterns among the bacteria.
  • Findings highlight the urgency for enhanced infection control measures and improved use of antibiotics, as well as adopting advanced techniques for bacterial identification to combat these emerging threats.
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Background: Identification of non-sputum diagnostic markers for tuberculosis (TB) is urgently needed. This exploratory study aimed to discover potential serum protein biomarkers for the diagnosis of active pulmonary TB (PTB).

Method: We employed Proximity Extension Assay (PEA) to measure levels of 92 protein biomarkers related to inflammation in serum samples from three patient groups: 30 patients with active PTB, 29 patients with other respiratory diseases with latent TB (ORD with LTBI+), and 29 patients with other respiratory diseases without latent TB (ORD with LTBI-).

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  • Shigellosis is a major health issue in Ethiopia, particularly affecting young children, and is exacerbated by antimicrobial resistance due to misuse of antibiotics and poor hygiene.
  • The study utilized whole genome sequencing (WGS) to examine Shigella sonnei strains in Addis Ababa, focusing on antibiotic resistance genes and plasmid types associated with these strains.
  • Findings showed a variety of resistance genes and phenotypic resistance patterns, indicating significant genetic diversity in S. sonnei strains, which suggests the need for enhanced monitoring of antimicrobial resistance through WGS.
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Background: Historically, mother-to-child transmission (MTCT) of hepatitis B virus (HBV) was considered uncommon in Africa, leading to a reluctant attitude to birth-dose HBV vaccination on the continent. As a randomized trial would be unethical, real-life data are needed to assess the effect of HBV birth-dose vaccine in Africa.

Methods: A multicenter, prospective, observational study of hepatitis B surface antigen (HBsAg)-positive pregnant women and their infants was carried out in Ethiopia, from January 2019 to May 2021.

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The diarrheagenic (DEC) is the major cause of diarrheal diseases in Africa, including Ethiopia. However, the genetic diversity of pathotypes found in Ethiopia has not been studied well. This study aimed to characterize potential DEC belonging to enteropathogenic (EPEC), Shiga toxin-producing (STEC), enteroaggregative (EAEC), enterotoxigenic (ETEC), and enteroinvasive (EIEC) pathotypes from stool specimens of patients attending primary healthcare units ( = 260) in Addis Ababa and Hossana using whole-genome sequencing.

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  • The study explores the prevalence of multidrug-resistant Pantoea species among sepsis patients in Ethiopia, highlighting the growing burden of sepsis caused by these pathogens.
  • Conducted from October 2019 to September 2020, researchers analyzed blood cultures from 1,416 patients across four hospitals, identifying various Pantoea species and characterizing them through advanced genomic techniques.
  • Findings revealed that P. dispersa was the most common, displaying genetic similarities and known antimicrobial resistance genes, emphasizing the need for improved infection control measures to combat these resistant strains.
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Background: Globally, extended-spectrum beta-lactamase-producing and carbapenem-resistant Enterobacterales are major causes of hospital-acquired infections and there are increasing concerns about their role in community-acquired infections.

Objective: We aimed to investigate the prevalence of extended-spectrum beta-lactamase-producing Enterobacterales (ESBL-PE) and Carbapenemase-producing-Carbapenemresistant-Enterobacterales (CP-CRE) and associated factors in community settings in Gulele sub city, Addis Ababa, Ethiopia.

Methods: A cross-sectional study was conducted among 261 healthy individuals.

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  • * Conducted in Adama, Ethiopia, the trial compared VIA with and without iodine among women who tested hrHPV positive after self-sampling.
  • * Results showed higher sensitivity with iodine (50%) versus without (25%), but the overall improvement was not statistically significant, while HIV positive women had a significantly higher detection rate for CIN2+.
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The global spread of antimicrobial resistance genes (ARGs) in is a major public health concern. The aim of this study was to investigate the genomic characteristics of extended-spectrum β-lactamase (ESBL)-producing and third-generation cephalosporin-resistant from a previously obtained collection of 260 isolates from fecal samples of patients attending primary healthcare facilities in Addis Ababa and Hossana, Ethiopia. A total of 29 isolates (19 phenotypically confirmed ESBL-producing and 10 third-generation cephalosporin-resistant isolates) were used.

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Veterinarians play a significant role in the treatment and prevention of livestock diseases at the farm level, safeguarding public health and ensuring food safety. In sub-Saharan Africa, access to quality veterinary services is a major challenge for livestock farmers due to the low number of publicly employed veterinarians, underfunding and privatisation of veterinary services. Low investment in veterinary services and infrastructure, including a lack of laboratories for diagnosis, has made veterinarians rely on their experience and knowledge of cattle disease symptoms developed over years of practice to diagnose and treat cattle diseases.

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  • Streptococcus pneumoniae is a significant opportunistic bacterial pathogen resulting in serious illnesses like pneumonia and meningitis, causing substantial health issues globally.
  • The study focused on understanding the molecular epidemiology of this pathogen in Ethiopia by analyzing 54 bacterial isolates from patients, using whole-genome sequencing and antimicrobial susceptibility testing.
  • Results showed a diversity of 32 serotypes and 42 sequence types including 21 new ones, indicating a concerning trend of resistance, particularly with serotype 14 being highly resistant to penicillin G, pointing to Ethiopia as a possible site for the emergence of new strains.
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We determined the dengue virus (DENV) serotypes and genotypes in archived serum samples that were collected during the 2014-2016 and 2021 dengue outbreaks in Dire Dawa City and the Somali region in Ethiopia. DENV serotype 1 (DENV-1) was predominant followed by DENV serotype 2 (DENV-2). Thirteen of the DENV-1 strains were assigned to Genotype-I, while the remaining two were found to be Genotype-III.

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Background: Current tuberculosis (TB) diagnostic tests primarily rely on sputum samples, yet many TB patients cannot produce sputum. This study explored whether saliva could be used instead of sputum to diagnose pulmonary TB (PTB).

Method: The study included 32 patients with confirmed PTB and 30 patients with other respiratory diseases (ORD).

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  • Cholera is an infectious disease caused by the bacteria Vibrio cholerae, primarily spread through contaminated food and water, posing significant public health risks.
  • A study conducted in Ethiopia from May 2022 to October 2023 collected and analyzed fecal samples from three regions, employing various microbiological tests to identify V. cholerae and assess antibiotic resistance.
  • The findings revealed a 30.1% prevalence of V. cholerae in the samples, with the highest rates found in Oromia, and noted that most isolates were of the O1 serogroup and Ogawa serotype, indicating a significant cholera presence in the studied areas.
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Universities and colleges are often regarded as playing a key role in educating veterinarians and animal health workers who advise farmers on herd health and animal husbandry. However, to date, studies examining veterinary students' knowledge of zoonotic diseases of public health importance and the source of this knowledge, as well as their preparedness to respond to these diseases, have focused on the Global North rather than the Global South. This study takes Ethiopia as a case study in exploring veterinary medicine students' knowledge of zoonosis risks, infection control practices and biosecurity measures, recognizing that it is imperative to reconcile national-level veterinary education curricula with emerging global trends, such as One Health-focused training.

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Introduction: The treatment response of multi-drug resistance tuberculosis (MDR-Tuberculosis) patients is mainly dictated by the sputum culture conversion. An earlier culture conversion is a remarkable indicator of the improvement in the treatment response. In this study, we aimed to determine the time to culture conversion and its associated factors among MDR-Tuberculosis patients in All Africa Leprosy, Tuberculosis and Rehabilitation Training Center (ALERT) Hospital, Addis Ababa, Ethiopia.

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Background: Newcastle disease (ND) is a highly infectious poultry disease that causes major economic losses worldwide. The disease is caused by Newcastle Disease Virus (NDV) and early detection and identification of the viral strain is essential. Having knowledge of the NDV strain genotype that circulates in some regions would help in designing an effective vaccine to control the disease.

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  • Acinetobacter baumannii is an opportunistic pathogen responsible for various infections, particularly in surgical sites, and this study focused on characterizing strains that produce extended-spectrum beta-lactamases (ESBL) and are resistant to carbapenems.
  • A multicenter study in Ethiopia identified a variety of Acinetobacter species using advanced microbiological techniques, revealing high rates of ESBL and carbapenem resistance among isolates from surgical site infections.
  • Results indicated that 93% of isolates produced ESBL enzymes, with higher prevalence of resistance genes found through whole genome sequencing, emphasizing significant public health concerns regarding antibiotic resistance in Acinetobacter species across different hospitals.
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  • Cervical cancer is a major health issue in Ethiopia, largely caused by persistent infections from human papillomaviruses (HPV).
  • A study in Bahir Dar found a strong association between specific high-risk HPV types, particularly HPV-16, and cervical intraepithelial neoplasia (CIN), indicating a significant cancer risk.
  • Given that current vaccines only cover a limited percentage of prevalent HPV types, the study suggests Ethiopia considers introducing a nonavalent vaccine to better address this public health challenge.
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Background: Laboratory test results are the cornerstone for patient diagnosis and treatment. Gram staining is a classic laboratory test method used to differentiate between bacteria. Competence assessment can help identify gaps and provide suggestions to academics, researchers, and policymakers to address competency gaps.

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A comprehensive understanding of the dynamics of Streptococcus pneumoniae colonization in conjunction with respiratory virus infections is essential for enhancing our knowledge of the pathogenesis and advancing the development of effective preventive strategies. Therefore, a case-control study was carried out in Addis Ababa, Ethiopia to investigate the colonization rate of S. pneumoniae and its coinfection dynamics with respiratory viruses among children under the age of 5 years.

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