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  1. Article ; Online: Bat-Borne Pathogens and Public Health in Rural African Artisanal Gold Mines.

    Towner, Jonathan S / Nyakarahuka, Luke / Atimnedi, Patrick

    AMA journal of ethics

    2024  Volume 26, Issue 2, Page(s) E109–115

    Abstract: Marburg virus, the first filovirus discovered and a close cousin to the Ebola virus, is carried by the Egyptian rousette bat, a common cave-dwelling fruit bat endemic to sub-Saharan Africa whose populations can exceed 50 000 individuals. Community ... ...

    Abstract Marburg virus, the first filovirus discovered and a close cousin to the Ebola virus, is carried by the Egyptian rousette bat, a common cave-dwelling fruit bat endemic to sub-Saharan Africa whose populations can exceed 50 000 individuals. Community outbreaks of Marburg virus can result in high morbidity rates. In eastern Africa, favorite habitats of these bats include rural subterranean gold mines-sometimes worked illegally-that create environments conducive to zoonotic virus transmission. This commentary on a case describes how outbreaks of Marburg virus disease among people exposed to sub-Saharan African caves and mines containing these bats cause tensions among miners, companies, public health officials, and conservationists.
    MeSH term(s) Animals ; Humans ; Chiroptera ; Public Health ; Marburg Virus Disease/epidemiology ; Disease Outbreaks ; Marburgvirus
    Language English
    Publishing date 2024-02-01
    Publishing country United States
    Document type Journal Article
    ISSN 2376-6980
    ISSN (online) 2376-6980
    DOI 10.1001/amajethics.2024.109
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article: Spatial prediction of Crimean Congo hemorrhagic fever virus seroprevalence among livestock in Uganda.

    Telford, Carson / Nyakarahuka, Luke / Waller, Lance / Kitron, Uriel / Shoemaker, Trevor

    One health (Amsterdam, Netherlands)

    2023  Volume 17, Page(s) 100576

    Abstract: Crimean-Congo Hemorrhagic Fever (CCHF) is a viral disease that can infect humans via contact with tick vectors or livestock reservoirs and can cause moderate to severe disease. The first human case of CCHF in Uganda was identified in 2013. To determine ... ...

    Abstract Crimean-Congo Hemorrhagic Fever (CCHF) is a viral disease that can infect humans via contact with tick vectors or livestock reservoirs and can cause moderate to severe disease. The first human case of CCHF in Uganda was identified in 2013. To determine the geographic distribution of the CCHF virus (CCHFV), serosampling among herds of livestock was conducted in 28 Uganda districts in 2017. A geostatistical model of CCHF seroprevalence among livestock was developed to incorporate environmental and anthropogenic variables associated with elevated CCHF seroprevalence to predict CCHF seroprevalence on a map of Uganda and estimate the probability that CCHF seroprevalence exceeded 30% at each prediction location. Environmental and anthropogenic variables were also analyzed in separate models to determine the spatially varying drivers of prediction and determine which covariate class resulted in best prediction certainty. Covariates used in the full model included distance to the nearest croplands, average annual change in night-time light index, percent sand soil content, land surface temperature, and enhanced vegetation index. Elevated CCHF seroprevalence occurred in patches throughout the country, being highest in northern Uganda. Environmental covariates drove predicted seroprevalence in the full model more than anthropogenic covariates. Combination of environmental and anthropogenic variables resulted in the best prediction certainty. An understanding of the spatial distribution of CCHF across Uganda and the variables that drove predictions can be used to prioritize specific locations and activities to reduce the risk of future CCHF transmission.
    Language English
    Publishing date 2023-06-12
    Publishing country Netherlands
    Document type Journal Article
    ZDB-ID 2834831-X
    ISSN 2352-7714
    ISSN 2352-7714
    DOI 10.1016/j.onehlt.2023.100576
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: Geostatistical Modeling and Prediction of Rift Valley Fever Seroprevalence among Livestock in Uganda.

    Telford, Carson / Nyakarahuka, Luke / Waller, Lance / Kitron, Uriel / Shoemaker, Trevor

    The American journal of tropical medicine and hygiene

    2023  Volume 108, Issue 4, Page(s) 712–721

    Abstract: Uganda reported cases of Rift Valley fever virus (RVFV) for the first time in almost 50 years in 2016, following an outbreak of Rift Valley fever (RVF) that caused four human infections, two of which resulted in death. Subsequent outbreak investigation ... ...

    Abstract Uganda reported cases of Rift Valley fever virus (RVFV) for the first time in almost 50 years in 2016, following an outbreak of Rift Valley fever (RVF) that caused four human infections, two of which resulted in death. Subsequent outbreak investigation serosurveys found high seroprevalence of IgG antibodies without evidence of acute infection or IgM antibodies, suggesting the possibility of undetected RVFV circulation prior to the outbreak. After the 2016 outbreak investigation, a serosurvey was conducted in 2017 among domesticated livestock herds across Uganda. Sampling data were incorporated into a geostatistical model to estimate RVF seroprevalence among cattle, sheep, and goats. Variables resulting in the best fit to RVF seroprevalence sampling data included annual variability in monthly precipitation and enhanced vegetation index, topographic wetness index, log human population density percent increase, and livestock species. Individual species RVF seroprevalence prediction maps were created for cattle, sheep, and goats, and a composite livestock prediction was created based on the estimated density of each species across the country. Seroprevalence was greater in cattle compared with sheep and goats. Predicted seroprevalence was greatest in the central and northwestern quadrant of the country, surrounding Lake Victoria, and along the Southern Cattle Corridor. We identified areas that experienced conditions conducive to potential increased RVFV circulation in 2021 in central Uganda. An improved understanding of the determinants of RVFV circulation and locations with high probability of elevated RVF seroprevalence can guide prioritization of disease surveillance and risk mitigation efforts.
    MeSH term(s) Animals ; Cattle ; Humans ; Sheep ; Rift Valley Fever/epidemiology ; Livestock ; Seroepidemiologic Studies ; Uganda/epidemiology ; Antibodies, Viral ; Rift Valley fever virus ; Goats
    Chemical Substances Antibodies, Viral
    Language English
    Publishing date 2023-03-06
    Publishing country United States
    Document type Journal Article
    ZDB-ID 2942-7
    ISSN 1476-1645 ; 0002-9637
    ISSN (online) 1476-1645
    ISSN 0002-9637
    DOI 10.4269/ajtmh.22-0555
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article ; Online: Spatial prediction of Crimean Congo hemorrhagic fever virus seroprevalence among livestock in Uganda

    Carson Telford / Luke Nyakarahuka / Lance Waller / Uriel Kitron / Trevor Shoemaker

    One Health, Vol 17, Iss , Pp 100576- (2023)

    2023  

    Abstract: Crimean-Congo Hemorrhagic Fever (CCHF) is a viral disease that can infect humans via contact with tick vectors or livestock reservoirs and can cause moderate to severe disease. The first human case of CCHF in Uganda was identified in 2013. To determine ... ...

    Abstract Crimean-Congo Hemorrhagic Fever (CCHF) is a viral disease that can infect humans via contact with tick vectors or livestock reservoirs and can cause moderate to severe disease. The first human case of CCHF in Uganda was identified in 2013. To determine the geographic distribution of the CCHF virus (CCHFV), serosampling among herds of livestock was conducted in 28 Uganda districts in 2017. A geostatistical model of CCHF seroprevalence among livestock was developed to incorporate environmental and anthropogenic variables associated with elevated CCHF seroprevalence to predict CCHF seroprevalence on a map of Uganda and estimate the probability that CCHF seroprevalence exceeded 30% at each prediction location. Environmental and anthropogenic variables were also analyzed in separate models to determine the spatially varying drivers of prediction and determine which covariate class resulted in best prediction certainty. Covariates used in the full model included distance to the nearest croplands, average annual change in night-time light index, percent sand soil content, land surface temperature, and enhanced vegetation index. Elevated CCHF seroprevalence occurred in patches throughout the country, being highest in northern Uganda. Environmental covariates drove predicted seroprevalence in the full model more than anthropogenic covariates. Combination of environmental and anthropogenic variables resulted in the best prediction certainty. An understanding of the spatial distribution of CCHF across Uganda and the variables that drove predictions can be used to prioritize specific locations and activities to reduce the risk of future CCHF transmission.
    Keywords Crimean-Congo hemorrhagic fever ; Geostatistical model ; Seroprevalence prediction ; Epidemiology ; Livestock ; Medicine (General) ; R5-920
    Subject code 333
    Language English
    Publishing date 2023-12-01T00:00:00Z
    Publisher Elsevier
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  5. Article ; Online: Correction: Rift valley fever outbreak in Sembabule District, Uganda, December 2020.

    Aceng, Freda Loy / Kayiwa, Joshua / Elyanu, Peter / Ojwang, Joseph / Nyakarahuka, Luke / Balinandi, Stephen / Byakika-Tusiime, Jayne / Wejuli, Alfred / Harris, Julie Rebecca / Opolot, John

    One health outlook

    2024  Volume 6, Issue 1, Page(s) 1

    Language English
    Publishing date 2024-01-02
    Publishing country England
    Document type Published Erratum
    ISSN 2524-4655
    ISSN (online) 2524-4655
    DOI 10.1186/s42522-023-00095-0
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article ; Online: Antimicrobial susceptibility profiles of Staphylococcus aureus in cattle and humans in farming communities of Isingiro and Kamuli districts, Uganda.

    Kungu, Joseph M / Tegule, Sarah S / Awke, Ilyas A / Namayanja, Josephine / Namyalo, Edity / Oposhia, Joseph / Olum, William / Nyakarahuka, Luke / Kankya, Clovice / Dahourou, Dieudonné / Odoi, Agricola

    Scientific reports

    2024  Volume 14, Issue 1, Page(s) 1900

    Abstract: Bacterial resistance to antimicrobials is fast becoming a big challenge as resistance to multiple drugs is rising rapidly. The emergence of resistant Staphylococcus aureus worldwide is life-threatening in both humans and animals and yet little is known ... ...

    Abstract Bacterial resistance to antimicrobials is fast becoming a big challenge as resistance to multiple drugs is rising rapidly. The emergence of resistant Staphylococcus aureus worldwide is life-threatening in both humans and animals and yet little is known about the burden of antimicrobial resistance (AMR) in developing countries including Uganda. Therefore, the aims of this study were to determine the prevalence of antimicrobial resistant S. aureus among humans and animals as well as assess the perceptions and practices of farmers in Kamuli and Isingiro districts in Uganda regarding AMR of S. aureus. A cross-sectional study was conducted between July and September 2020 in 147 randomly selected cattle-keeping households in Isingiro and Kamuli districts. A structured questionnaire uploaded in the Kobo-collect online data collection tool was used to assess farmers' perceptions and practices pertaining to AMR in each of the selected households. Nasal swabs (n = 147) were collected from both cattle and humans (farmers). Bacterial isolation and confirmation was done using Gram-staining and biochemical tests. This was followed by antimicrobial susceptibility testing (AST) using the Kirby Bauer disc diffusion method. Only 14/147 (9.5%) cattle samples and 45/147(30.6%) human samples tested positive for S. aureus. All cattle S. aureus isolates were resistant to Nitroimidazoles while 92.9% were resistant to Penicillins. None of the isolates were resistant to Fluoroquinolones and Aminoglycosides. All the 14 isolates exhibited AMR to at least one of the assessed antibiotics and 92.9% (13/14) showed evidence of multidrug resistance (MDR). Likewise, S. aureus human isolates showed high levels of resistance to Nitroimidazoles (100%) and Penicillins (93.3%), with none of the isolates having resistance to Aminoglycosides, and only one exhibiting resistance to Fluoroquinolones (2.2%). All the 45 human isolates exhibited AMR to at least one antibiotic while 93% (42/45) had MDR. Most farmers had good perceptions of AMR, with a significantly higher proportion of respondents from Isingiro than Kamuli showing a better understanding of AMR. Antibiotic prophylaxis was reported to be the least practiced measure of diseases and parasites control (17.0%), with more farmers in Isingiro (33.3%) undertaking it than those in Kamuli (1.3%) (p < 0.001). Penicillins and Nitroimidazoles were reported to be the most used antibiotics among cattle and humans. This study provides evidence of occurrence of S. aureus resistance to antimicrobials commonly used in both humans and livestock in Isingiro and Kamuli districts. Farmers had good perceptions regarding AMR as well as good antimicrobial use practices which can form a basis for mitigation of AMR.
    MeSH term(s) Humans ; Cattle ; Animals ; Staphylococcus aureus ; Methicillin-Resistant Staphylococcus aureus ; Uganda/epidemiology ; Cross-Sectional Studies ; Agriculture ; Staphylococcal Infections/drug therapy ; Staphylococcal Infections/epidemiology ; Staphylococcal Infections/veterinary ; Anti-Bacterial Agents/pharmacology ; Nitroimidazoles ; Penicillins ; Aminoglycosides ; Fluoroquinolones
    Chemical Substances Anti-Bacterial Agents ; Nitroimidazoles ; Penicillins ; Aminoglycosides ; Fluoroquinolones
    Language English
    Publishing date 2024-01-22
    Publishing country England
    Document type Journal Article
    ZDB-ID 2615211-3
    ISSN 2045-2322 ; 2045-2322
    ISSN (online) 2045-2322
    ISSN 2045-2322
    DOI 10.1038/s41598-024-52035-1
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  7. Article ; Online: Knowledge, perceptions, and exposure to bats in communities living around bat roosts in Bundibugyo district, Uganda: implications for viral haemorrhagic fever prevention and control.

    Ninsiima, Lesley Rose / Nyakarahuka, Luke / Kisaka, Steven / Atuheire, Collins Gk / Mugisha, Lawrence / Odoch, Terence / Romano, Javier Sánchez / Klein, Jörn / Mor, Siobhan M / Kankya, Clovice

    BMC infectious diseases

    2024  Volume 24, Issue 1, Page(s) 311

    Abstract: Background: Bats are a reservoir for many viruses causing haemorrhagic fevers. Proximity to bats is a risk factor for virus spillover to animals and humans. We conducted this study to assess knowledge, perceptions, and exposure to bats in communities ... ...

    Abstract Background: Bats are a reservoir for many viruses causing haemorrhagic fevers. Proximity to bats is a risk factor for virus spillover to animals and humans. We conducted this study to assess knowledge, perceptions, and exposure to bats in communities living near bat roosts in Bundibugyo District, Uganda.
    Methods: A cross-sectional study using mixed methods with both quantitative and qualitative data was conducted between September and December 2022. Participants for the quantitative data (survey) (n = 384) resided near bat caves and/or roost sites and were selected using multistage random sampling. The survey investigated participants' prior exposure to bats, as well as knowledge and perceptions of bat exposure. Logistic regression was used to determine factors associated with bat exposure. Participants for the qualitative data (focus group discussions) (n = 10, 6-8 participants each) were purposely selected based on engagement in guano mining, hunting, and farming activities. Perceived risk associated with bat-related activities were identified and ranked in the focus group discussions using participatory epidemiology tools.
    Results: In total, (214/384, 55.7%) had a history of bat exposure and (208/384, 54.2%) had poor knowledge of risk factors associated with bat exposure. Increased exposure to bats was associated with being male (OR = 1.6; 95% CI: 1.0, 2.4 p-value = 0.038), staying in urban areas (OR = 1.9; p-value = 0.010), hunting (OR = 10.9; p-value = 0.024), and positive perception to bat guano being safe as fertiliser (OR = 2.5; p-value = 0.045). During the proportional piling process, a total of 7 risk factors were identified by 10 groups with hunting during an outbreak and consumption of bats being the most frequently identified. Overall, there was a strong statistical agreement in the ranking across the 10 focus groups (W = 0.52; p < 0.01; n = 10). Based on the provided data, the adjusted odds ratio of 0.7 for the good measures (p-value = 0.112), suggests a potential protective effect on the risk of bat exposure.
    Conclusion: Communities living around bat roosts frequently come into contact with bats, yet there is inadequate awareness regarding the behaviors that can lead to the transmission of bat- borne diseases to humans. It is essential to undertake educational initiatives and preventive measures to minimise the risks of bat-related infections. The need for targeted health communication and education efforts to address these knowledge gaps and promote an accurate understanding of bats and disease transmission. Understanding of diseases associated with bats will minimize bat-related health risks especially in communities engaged in wildlife hunting.
    MeSH term(s) Animals ; Humans ; Male ; Female ; Chiroptera ; Cross-Sectional Studies ; Uganda/epidemiology ; Surveys and Questionnaires ; Hemorrhagic Fevers, Viral
    Language English
    Publishing date 2024-03-14
    Publishing country England
    Document type Journal Article
    ZDB-ID 2041550-3
    ISSN 1471-2334 ; 1471-2334
    ISSN (online) 1471-2334
    ISSN 1471-2334
    DOI 10.1186/s12879-024-09162-x
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  8. Article ; Online: Severe morbidity and hospital-based mortality from Rift Valley fever disease between November 2017 and March 2020 among humans in Uganda.

    Anywaine, Zacchaeus / Hansen, Christian / Warimwe, George M / Abu-Baker Mustapher, Ggayi / Nyakarahuka, Luke / Balinandi, Stephen / Ario, Alex Riolexus / Lutwama, Julius J / Elliott, Alison / Kaleebu, Pontiano

    Virology journal

    2024  Volume 21, Issue 1, Page(s) 104

    Abstract: Background: Rift Valley fever (RVF) is a zoonotic viral disease of increasing intensity among humans in Africa and the Arabian Peninsula. In Uganda, cases reported prior to 2016 were mild or not fully documented. We report in this paper on the severe ... ...

    Abstract Background: Rift Valley fever (RVF) is a zoonotic viral disease of increasing intensity among humans in Africa and the Arabian Peninsula. In Uganda, cases reported prior to 2016 were mild or not fully documented. We report in this paper on the severe morbidity and hospital-based mortality of human cases in Uganda.
    Methods: Between November 2017 and March 2020 human cases reported to the Uganda Virus Research Institute (UVRI) were confirmed by polymerase chain reaction (PCR). Ethical and regulatory approvals were obtained to enrol survivors into a one-year follow-up study. Data were collected on socio-demographics, medical history, laboratory tests, potential risk factors, and analysed using Stata software.
    Results: Overall, 40 cases were confirmed with acute RVF during this period. Cases were not geographically clustered and nearly all were male (39/40; 98%), median age 32 (range 11-63). The median definitive diagnosis time was 7 days and a delay of three days between presumptive and definitive diagnosis. Most patients (31/40; 78%) presented with fever and bleeding at case detection. Twenty-eight (70%) cases were hospitalised, out of whom 18 (64%) died. Mortality was highest among admissions in regional referral (11/16; 69%) and district (4/5; 80%) hospitals, hospitalized patients with bleeding at case detection (17/27; 63%), and patients older than 44 years (9/9; 100%). Survivors mostly manifested a mild gastro-intestinal syndrome with nausea (83%), anorexia (75%), vomiting (75%), abdominal pain (50%), and diarrhoea (42%), and prolonged symptoms of severe disease including jaundice (67%), visual difficulties (67%), epistaxis (50%), haemoptysis (42%), and dysentery (25%). Symptom duration varied between two to 120 days.
    Conclusion: RVF is associated with high hospital-based mortality, severe and prolonged morbidity among humans that present to the health care system and are confirmed by PCR. One-health composite interventions should be developed to improve environmental and livestock surveillance, prevent infections, promptly detect outbreaks, and improve patient outcomes.
    MeSH term(s) Humans ; Uganda/epidemiology ; Rift Valley Fever/mortality ; Rift Valley Fever/epidemiology ; Male ; Adult ; Middle Aged ; Adolescent ; Female ; Young Adult ; Child ; Rift Valley fever virus/genetics ; Hospital Mortality ; Morbidity ; Risk Factors
    Language English
    Publishing date 2024-05-03
    Publishing country England
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2160640-7
    ISSN 1743-422X ; 1743-422X
    ISSN (online) 1743-422X
    ISSN 1743-422X
    DOI 10.1186/s12985-024-02377-z
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  9. Article ; Online: Correction

    Freda Loy Aceng / Joshua Kayiwa / Peter Elyanu / Joseph Ojwang / Luke Nyakarahuka / Stephen Balinandi / Jayne Byakika-Tusiime / Alfred Wejuli / Julie Rebecca Harris / John Opolot

    One Health Outlook, Vol 6, Iss 1, Pp 1-

    Rift valley fever outbreak in Sembabule District, Uganda, December 2020

    2024  Volume 3

    Keywords Environmental sciences ; GE1-350 ; Public aspects of medicine ; RA1-1270
    Language English
    Publishing date 2024-01-01T00:00:00Z
    Publisher BMC
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  10. Article: Prevalence of

    Namyalo, Edity / Nyakarahuka, Luke / Afayoa, Matthias / Baziira, Joel / Tamale, Andrew / Atuhaire, G Collins / Kungu, Joseph M

    Journal of tropical medicine

    2021  Volume 2021, Page(s) 9935142

    Abstract: Background: Helicobacter pylori: Results: The overall 5-year : Conclusion: ... ...

    Abstract Background: Helicobacter pylori
    Results: The overall 5-year
    Conclusion: H
    Language English
    Publishing date 2021-11-08
    Publishing country Egypt
    Document type Journal Article
    ZDB-ID 2546526-0
    ISSN 1687-9694 ; 1687-9686
    ISSN (online) 1687-9694
    ISSN 1687-9686
    DOI 10.1155/2021/9935142
    Database MEDical Literature Analysis and Retrieval System OnLINE

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