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Si R, Liu X, Zhang X, Chen Y, Xiang W, Liu M, Tan Y, Yang G. Contract governance to reduce antimicrobial overuse in hog farms in China. One Health 2024; 19:100859. [PMID: 39157651 PMCID: PMC11327576 DOI: 10.1016/j.onehlt.2024.100859] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2023] [Revised: 04/24/2024] [Accepted: 07/15/2024] [Indexed: 08/20/2024] Open
Abstract
Antimicrobial resistance caused by the overuse of antimicrobials by farmers is an essential health issue. Currently, signing contracts between farmers and cooperatives has become crucial for small farmers to integrate into the modern agricultural industry chain. Unlike vertical government governance, which aims to intervene in the overuse of antimicrobials by farmers through many mandatory or incentive measures, contract governance refers to the social governance model that clarifies rights and obligations between farmers and cooperatives to ensure the adequate performance of contracts, which is especially beneficial to regulate farmers' safe production behavior such as the standard use of antimicrobials. However, there is a research gap concerning the effectiveness of contract governance in inhibiting farmers' overuse of animal antimicrobials. This study applies propensity score matching and mediation analysis method to assess how contract governance affects the overuse of antimicrobials by hog farmers. The paper uses data from 498 hog farmers of China's Hebei, Henan, and Hubei provinces to explore the impact and underlying mechanisms of contract governance on antimicrobial overuse in agriculture. The results showed that contract governance was found to inhibit the overuse of antimicrobials, with the amount paid for antimicrobials reduced by 118 yuan/household. We found evidence that this effect is exerted through three mechanisms: cooperative supervision (CS), technical guidance (TG), and product premium perception (PP). The CS, TG, and PP mediation effects accounted for 19.94%, 27.90%, and 26.93% of the total impact, respectively. Therefore, policy implications of these results include strengthening the standard of contract signing procedures and the integrity of executing contracts, increasing the market premium for products that meet the antimicrobial residue standards, and enhancing farmers' knowledge and contracting ability.
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Affiliation(s)
- Ruishi Si
- Academy of the Zhonghuaminzu Community, Ningxia University, Yinchuan 750021, China
- School of Public Administration, Xi'an University of Architecture and Technology, Xi'an 710055, China
| | - Xin Liu
- School of Public Administration, Xi'an University of Architecture and Technology, Xi'an 710055, China
| | - Xueqian Zhang
- School of Public Administration, Xi'an University of Architecture and Technology, Xi'an 710055, China
| | - Yi Chen
- School of Public Administration, Xi'an University of Architecture and Technology, Xi'an 710055, China
| | - Wen Xiang
- Institute for Interdisciplinary and Innovate Research, Xi'an University of Architecture and Technology, Xi'an 710055, China
| | - Mingyue Liu
- Institute of Agricultural Economics and Development, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Yongfeng Tan
- School of Economics and Management, Ningxia University, Yinchuan 750021, China
| | - Guotao Yang
- School of Economics and Management, Ningxia University, Yinchuan 750021, China
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French NP, Thomas KM, Amani NB, Benschop J, Bigogo GM, Cleaveland S, Fayaz A, Hugho EA, Karimuribo ED, Kasagama E, Maganga R, Melubo ML, Midwinter AC, Mmbaga BT, Mosha VV, Mshana FI, Munyua P, Ochieng JB, Rogers L, Sindiyo E, Swai ES, Verani JR, Widdowson MA, Wilkinson DA, Kazwala RR, Crump JA, Zadoks RN. Population Structure and Antimicrobial Resistance in Campylobacter jejuni and C. coli Isolated from Humans with Diarrhea and from Poultry, East Africa. Emerg Infect Dis 2024; 30:2079-2089. [PMID: 39320160 PMCID: PMC11431929 DOI: 10.3201/eid3010.231399] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/26/2024] Open
Abstract
Campylobacteriosis and antimicrobial resistance (AMR) are global public health concerns. Africa is estimated to have the world's highest incidence of campylobacteriosis and a relatively high prevalence of AMR in Campylobacter spp. from humans and animals. Few studies have compared Campylobacter spp. isolated from humans and poultry in Africa using whole-genome sequencing and antimicrobial susceptibility testing. We explored the population structure and AMR of 178 Campylobacter isolates from East Africa, 81 from patients with diarrhea in Kenya and 97 from 56 poultry samples in Tanzania, collected during 2006-2017. Sequence type diversity was high in both poultry and human isolates, with some sequence types in common. The estimated prevalence of multidrug resistance, defined as resistance to >3 antimicrobial classes, was higher in poultry isolates (40.9%, 95% credible interval 23.6%-59.4%) than in human isolates (2.5%, 95% credible interval 0.3%-6.8%), underlining the importance of antimicrobial stewardship in livestock systems.
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Loosli K, Nasuwa F, Melubo M, Mnzava K, Matthews L, Mshana SE, Mmbaga BT, Muwonge A, Davis A, Lembo T. Exploring drivers of self-treatment with antibiotics in three agricultural communities of northern Tanzania. Antimicrob Resist Infect Control 2024; 13:94. [PMID: 39210436 PMCID: PMC11363527 DOI: 10.1186/s13756-024-01453-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2023] [Accepted: 08/20/2024] [Indexed: 09/04/2024] Open
Abstract
BACKGROUND Antimicrobial resistance (AMR) poses a significant global health threat, particularly in low- and middle-income countries (LMICs). Self-treatment with antibiotics, the practice of using antibiotics without professional guidance, is often considered an important contributor to the emergence and spread of AMR. METHOD This study investigated the drivers of self-treatment in three common types of agricultural communities in northern Tanzania. The research employed a comprehensive array of methods, including cross-sectional surveys (n = 790), interviews (n = 30) and observations (n = 178) targeting both antibiotic (human and animal) providers and users (patients and farmers). Qualitative interview data were analysed using a coding and association matrix, while descriptive analyses were performed on survey and observation data. RESULTS Self-treatment with antibiotics was highly prevalent in all communities. Between 41.0% (self-reported) and 60.3% (observed) of human antibiotics were obtained without a prescription and we observed that veterinary antibiotics were regularly purchased in retail shops without referral by a professional. Structural deficiencies in the healthcare system drove this practice: limited access to healthcare facilities, medication stockouts and prolonged waiting times were identified as key factors. The absence of safety nets like insurance schemes further contributed to self-medication. Retail shops offered a convenient and cost-effective alternative when antibiotics were inaccessible or unaffordable. Notably, informal networks comprising treatment vendors, friends or neighbours, as well as personal experiences played a crucial role in guiding individuals in their self-treatment decisions by providing advice on treatment choice and modalities. CONCLUSIONS Addressing self-treatment requires a multi-faceted approach. Improving the availability and accessibility of antibiotics, enhancing healthcare services and involving retail vendors in antibiotic stewardship are essential. Structural issues like access to diagnostics and medicines must be tackled, alongside reducing barriers and incentivising individuals to use professional healthcare services. Training retail vendors to sell specific first-line antibiotics over the counter with guidance on appropriate usage should be considered. Such bottom-up interventions will enable sustainable promotion of responsible antibiotic use, mitigating AMR emergence and securing a healthier future for all.
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Affiliation(s)
- Kathrin Loosli
- The Boyd Orr Centre for Population and Ecosystem Health, School of Biodiversity, One Health & Veterinary Medicine, College of Medical, Veterinary & Life Sciences, University of Glasgow, Glasgow, UK.
| | - Fortunata Nasuwa
- Kilimanjaro Clinical Research Institute, Kilimanjaro Christian Medical Centre, Moshi, Tanzania
| | - Matayo Melubo
- Kilimanjaro Clinical Research Institute, Kilimanjaro Christian Medical Centre, Moshi, Tanzania
| | - Kunda Mnzava
- Department of Microbiology and Immunology, Catholic University of Health and Allied Sciences/Bugando Medical Centre, Mwanza, Tanzania
| | - Louise Matthews
- The Boyd Orr Centre for Population and Ecosystem Health, School of Biodiversity, One Health & Veterinary Medicine, College of Medical, Veterinary & Life Sciences, University of Glasgow, Glasgow, UK
| | - Stephen E Mshana
- Department of Microbiology and Immunology, Catholic University of Health and Allied Sciences/Bugando Medical Centre, Mwanza, Tanzania
| | - Blandina T Mmbaga
- Kilimanjaro Clinical Research Institute/Kilimanjaro Christian Medical University College, Kilimanjaro Christian Medical Centre, Moshi, Tanzania
| | - Adrian Muwonge
- Digital One Health Laboratory, The Roslin Institute, The Royal (Dick) School of Veterinary Studies, University of Edinburgh, Easter Bush Campus, Edinburgh, UK
| | - Alicia Davis
- School of Social and Political Sciences and School of Health and Wellbeing, University of Glasgow, Glasgow, UK
| | - Tiziana Lembo
- The Boyd Orr Centre for Population and Ecosystem Health, School of Biodiversity, One Health & Veterinary Medicine, College of Medical, Veterinary & Life Sciences, University of Glasgow, Glasgow, UK
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Lotto T, Renggli S, Kaale E, Masanja H, Ternon B, Décosterd LA, D'Acremont V, Genton B, Kulinkina AV. Prevalence and predictors of residual antibiotics in children's blood in community settings in Tanzania. Clin Microbiol Infect 2024; 30:1042-1048. [PMID: 38740136 DOI: 10.1016/j.cmi.2024.05.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2023] [Revised: 04/30/2024] [Accepted: 05/07/2024] [Indexed: 05/16/2024]
Abstract
OBJECTIVES Children account for a significant proportion of antibiotic consumption in low- and middle-income countries, with overuse occurring in formal and informal health sectors. This study assessed the prevalence and predictors of residual antibiotics in the blood of children in the Mbeya and Morogoro regions of Tanzania. METHODS The cross-sectional community-based survey used two-stage cluster sampling to include children aged under 15 years. For each child, information on recent illness, healthcare-seeking behaviour, and use of antibiotics, as well as a dried blood spot sample, were collected. The samples underwent tandem mass spectrometry analysis to quantify the concentrations of 15 common antibiotics. Associations between survey variables and the presence of residual antibiotics were assessed using mixed-effects logistic regression. RESULTS In total, 1742 children were surveyed, and 1699 analysed. The overall prevalence of residual antibiotics in the blood samples was 17.4% (296/1699), the highest among children under the age of 5 years. The most frequently detected antibiotics were trimethoprim (144/1699; 8.5%), sulfamethoxazole (102/1699; 6.0%), metronidazole (61/1699; 3.6%), and amoxicillin (43/1699; 2.5%). The strongest predictors of residual antibiotics in the blood were observed presence of antibiotics at home (adjusted odds ratio [aOR] = 2.9; 95% CI, 2.0-4.1) and reported consumption of antibiotics in the last 2 weeks (aOR = 2.5; 95% CI, 1.6-3.9). However, half (145/296) of the children who had residual antibiotics in their blood, some with multiple antibiotics, had no reported history of illness or antibiotic consumption in the last 2 weeks, and antibiotics were not found at home. DISCUSSION This study demonstrated a high prevalence of antibiotic exposure among children in Tanzanian communities, albeit likely underestimated, especially for compounds with short half-lives. A significant proportion of antibiotic exposure was unexplained and may have been due to unreported self-medication or environmental pathways. Incorporating biomonitoring into surveillance strategies can help better understand exposure patterns and design antibiotic stewardship interventions.
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Affiliation(s)
- Theopista Lotto
- Swiss Tropical and Public Health Institute, Allschwil, Switzerland; University of Basel, Basel, Switzerland; Ifakara Health Institute, Dar es Salaam, Tanzania.
| | - Sabine Renggli
- Swiss Tropical and Public Health Institute, Allschwil, Switzerland; Ifakara Health Institute, Dar es Salaam, Tanzania
| | - Eliangiringa Kaale
- Muhimbili University of Health and Allied Sciences, Dar es Salaam, Tanzania
| | | | - Beatrice Ternon
- Laboratory of Clinical Pharmacology, University Hospital, Lausanne
| | - Laurent Arthur Décosterd
- Laboratory of Clinical Pharmacology, University Hospital, Lausanne; University of Lausanne, Lausanne, Switzerland
| | - Valérie D'Acremont
- Swiss Tropical and Public Health Institute, Allschwil, Switzerland; University of Basel, Basel, Switzerland; University of Lausanne, Lausanne, Switzerland; Centre for Primary Care and Public Health, Lausanne, Switzerland
| | - Blaise Genton
- University of Lausanne, Lausanne, Switzerland; Centre for Primary Care and Public Health, Lausanne, Switzerland
| | - Alexandra V Kulinkina
- Swiss Tropical and Public Health Institute, Allschwil, Switzerland; University of Basel, Basel, Switzerland
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Ngunguni SM, Moodley A, Msefula C, Mkakosya R, Muloi DM. Patterns and drivers of antibiotic use in small-scale broiler production systems in Lilongwe District, Malawi. Prev Vet Med 2024; 230:106263. [PMID: 38964210 DOI: 10.1016/j.prevetmed.2024.106263] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2024] [Revised: 06/18/2024] [Accepted: 06/23/2024] [Indexed: 07/06/2024]
Abstract
Reducing the inappropriate use of antibiotics in food animals is a global priority to address antimicrobial resistance (AMR). We investigated practices and factors associated with antibiotic use in small-scale commercial broiler farms in Lilongwe district, Malawi. We used structured questionnaires to collect data on recent antibiotic use practices among 128 broiler farmers, who kept between 50 and 1 000 birds, from December 2022 to March 2023. Logistic regression analysis was used to identify risk factors associated with antibiotic use. Over half (53.1 %, n=68) of the farms reported using antibiotics at least once in the previous production cycle. Overall, 11 different types of antibiotics were used either for treatment and/or preventive purposes, with oxytetracycline (88.2 %), erythromycin (29.4 %), and enrofloxacin (26.5 %) reported as the frequently used. One-third of all antibiotic formulations contained multiple active antibiotic ingredients, with 12 % containing four antibiotics. Covariates associated with an increased likelihood of antibiotic use include disease incidence (OR=13.8, 95 % CI 5.27-42.50, p<0.001) and entry of wild birds into poultry houses (OR=3.56, 95 % CI =1.44-9.61, p=0.008). Our study highlights inappropriate usage of antibiotics, largely associated with reduced biosecurity and disease incidence. These findings underscore the need to strengthen veterinary services, reinforce regulations on antibiotic access and use, and farmer education programs promoting proper husbandry, biosecurity, and responsible antibiotic use.
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Affiliation(s)
- Shareef Mtila Ngunguni
- Animal and Human Health Program, International Livestock Research Institute, P.O. Box 30709, Nairobi 00100, Kenya; Department of Pathology, Kamuzu University of Health Sciences, Private Bag 360, Blantyre, Malawi
| | - Arshnee Moodley
- Animal and Human Health Program, International Livestock Research Institute, P.O. Box 30709, Nairobi 00100, Kenya; Department of Veterinary and Animal Sciences, University of Copenhagen, Stigbøjlen 4, Frederiksberg C 1870, Denmark
| | - Chisomo Msefula
- Department of Pathology, Kamuzu University of Health Sciences, Private Bag 360, Blantyre, Malawi
| | - Rajab Mkakosya
- Department of Pathology, Kamuzu University of Health Sciences, Private Bag 360, Blantyre, Malawi
| | - Dishon M Muloi
- Animal and Human Health Program, International Livestock Research Institute, P.O. Box 30709, Nairobi 00100, Kenya; Institute of Infection, Veterinary and Ecological Sciences, University of Liverpool, Neston, UK.
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Mudenda S, Mulenga KM, Nyirongo R, Chabalenge B, Chileshe C, Daka V, M’kandawire E, Jere E, Muma JB. Non-prescription sale and dispensing of antibiotics for prophylaxis in broiler chickens in Lusaka District, Zambia: findings and implications on one health. JAC Antimicrob Resist 2024; 6:dlae094. [PMID: 38863561 PMCID: PMC11166086 DOI: 10.1093/jacamr/dlae094] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2024] [Accepted: 05/24/2024] [Indexed: 06/13/2024] Open
Abstract
Background The irrational use of antibiotics in humans and livestock has contributed to the emergence of antimicrobial resistance (AMR). This study investigated the commonly sold and dispensed antibiotics for prophylaxis in broiler chickens in pharmacy and agro-veterinary shop personnel in the Lusaka District of Zambia. Methods This cross-sectional study was conducted from August 2023 to October 2023 among 200 veterinary medicine dispensers in the Lusaka District of Zambia using a simulated farmer or mystery shopper approach. Data analysis was performed using IBM Statistical Package for Social Sciences version 23.0. Results Out of the 200 medicine outlets investigated, 23 (11.5%) were agro-veterinary shops, while 177 (88.5%) were community pharmacies. A total of 165 community pharmacies and agro-veterinary shops provided veterinary services in the Lusaka District and sold medicines without prescription giving a 100% non-prescription sale. Of the 178 medicines dispensed for prophylaxis, 88.5% were antibiotics, while 13.5% were vitamins. The most dispensed antibiotic drug for prophylaxis in broiler chickens was oxytetracycline (30.34%), amoxicillin (17.98%) and gentamicin/doxycycline (10.67%). Conclusions This study revealed a high sale and dispensing of antibiotics for prophylaxis in broiler chickens of which oxytetracycline, amoxicillin and gentamicin/doxycycline were commonly dispensed. There is a need for increased regulatory enforcement of selling antibiotics without a prescription as this may predispose poultry to the development of AMR and possible transmission of superbugs to humans and the environment. Educational interventions should be provided to community pharmacy and agro-veterinary personnel on adhering to antimicrobial stewardship practices when dispensing poultry antibiotics.
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Affiliation(s)
- Steward Mudenda
- Department of Pharmacy, School of Health Sciences, University of Zambia, Lusaka, Zambia
| | - Karen Mubanga Mulenga
- Department of Pharmacy, School of Health Sciences, University of Zambia, Lusaka, Zambia
| | - Ruth Nyirongo
- Department of Pharmacy, School of Health Sciences, University of Zambia, Lusaka, Zambia
| | - Billy Chabalenge
- Department of Medicines Control, Zambia Medicines Regulatory Authority, Lusaka, Zambia
| | - Chikwanda Chileshe
- Department of Biomedical Sciences, School of Veterinary Medicine, University of Zambia, Lusaka, Zambia
| | - Victor Daka
- Department of Disease Control, School of Veterinary Medicine, University of Zambia, Lusaka, Zambia
| | - Ethel M’kandawire
- Department of Public Health, Michael Chilufya Sata School of Medicine, Copperbelt University, Ndola, Zambia
| | - Elimas Jere
- Department of Post Marketing Surveillance, Zambia Medicines Regulatory Authority, Lusaka, Zambia
| | - John Bwalya Muma
- Department of Public Health, Michael Chilufya Sata School of Medicine, Copperbelt University, Ndola, Zambia
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Chileshe C, Shawa M, Phiri N, Ndebe J, Khumalo CS, Nakajima C, Kajihara M, Higashi H, Sawa H, Suzuki Y, Muleya W, Hang'ombe BM. Detection of Extended-Spectrum Beta-Lactamase (ESBL)-Producing Enterobacteriaceae from Diseased Broiler Chickens in Lusaka District, Zambia. Antibiotics (Basel) 2024; 13:259. [PMID: 38534694 DOI: 10.3390/antibiotics13030259] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2023] [Revised: 01/05/2024] [Accepted: 01/18/2024] [Indexed: 03/28/2024] Open
Abstract
Poultry products in Zambia form an integral part of the human diet in many households, as they are cheap and easy to produce. The burden of poultry diseases has, however, remained a major challenge. Growing consumer demand for poultry products in Zambia has resulted in non-prudent antimicrobial use on farms, intending to prevent and treat poultry diseases for growth optimisation and maximising profits. This cross-sectional study aimed to identify the different types of bacteria causing diseases in chickens in Lusaka and to detect the extended-spectrum lactamase (ESBL)-encoding genes. We collected 215 samples from 91 diseased chickens at three post-mortem facilities and screened them for Gram-negative bacteria. Of these samples, 103 tested positive for various clinically relevant Enterobacteriaceae, including Enterobacter (43/103, 41.7%), Escherichia coli (20/103, 19.4%), Salmonella (10/103, 9.7%), and Shigella (8/103, 7.8%). Other isolated bacteria included Yersinia, Morganella, Proteus, and Klebsiella, which accounted for 21.4%. E. coli, Enterobacter, Salmonella, and Shigella were subjected to antimicrobial susceptibility testing. The results revealed that E. coli, Enterobacter, and Shigella were highly resistant to tetracycline, ampicillin, amoxicillin, and trimethoprim-sulfamethoxazole, while Salmonella showed complete susceptibility to all tested antibiotics. The observed resistance patterns correlated with antimicrobial usage estimated from sales data from a large-scale wholesale and retail company. Six (6/14, 42.9%) E. coli isolates tested positive for blaCTX-M, whilst eight (8/14, 57.1%) Enterobacter samples tested positive for blaTEM. Interestingly, four (4/6, 66.7%) of the E. coli isolates carrying blaCTX-M-positive strains were also positive for blaTEM. Sanger sequencing of the PCR products revealed that five (5/6, 83.3%) of the abovementioned isolates possessed the blaCTX-M-15 allele. The results suggest the presence of potentially pathogenic ESBL-producing Enterobacteriaceae in poultry, threatening public health.
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Affiliation(s)
- Chikwanda Chileshe
- Department of Biomedical Sciences, School of Veterinary Medicine, University of Zambia, Lusaka 10101, Zambia
| | - Misheck Shawa
- Hokudai Center for Zoonosis Control in Zambia, University of Zambia, Lusaka 10101, Zambia
| | - Nelson Phiri
- Department of Medicine Control, Zambia Medicines Regulatory Authority, Lusaka 10101, Zambia
| | - Joseph Ndebe
- Department of Disease Control, School of Veterinary Medicine, University of Zambia, Lusaka 10101, Zambia
| | - Cynthia Sipho Khumalo
- Department of Biomedical Sciences, School of Veterinary Medicine, University of Zambia, Lusaka 10101, Zambia
| | - Chie Nakajima
- Division of Bioresources, International Institute for Zoonosis Control, Hokkaido University, N20 W10, Kita-ku, Sapporo 001-0020, Japan
| | - Masahiro Kajihara
- Hokudai Center for Zoonosis Control in Zambia, University of Zambia, Lusaka 10101, Zambia
- Division of International Research Promotion, International Institute for Zoonosis Control, Hokkaido University, N20 W10, Kita-ku, Sapporo 001-0020, Japan
| | - Hideaki Higashi
- Division of Infection and Immunity, International Institute for Zoonosis Control, Hokkaido University, N20 W10, Kita-ku, Sapporo 001-0020, Japan
| | - Hirofumi Sawa
- Hokudai Center for Zoonosis Control in Zambia, University of Zambia, Lusaka 10101, Zambia
- Division of International Research Promotion, International Institute for Zoonosis Control, Hokkaido University, N20 W10, Kita-ku, Sapporo 001-0020, Japan
- Institute for Vaccine Research and Development (HU-IVReD), Hokkaido University, N21 W11, Kita-ku, Sapporo 001-0020, Japan
- Division of Molecular Pathobiology, International Institute for Zoonosis Control, Hokkaido University, N20 W10, Kita-ku, Sapporo 001-0020, Japan
| | - Yasuhiko Suzuki
- Division of Bioresources, International Institute for Zoonosis Control, Hokkaido University, N20 W10, Kita-ku, Sapporo 001-0020, Japan
- Division of International Research Promotion, International Institute for Zoonosis Control, Hokkaido University, N20 W10, Kita-ku, Sapporo 001-0020, Japan
- Division of Molecular Pathobiology, International Institute for Zoonosis Control, Hokkaido University, N20 W10, Kita-ku, Sapporo 001-0020, Japan
| | - Walter Muleya
- Department of Biomedical Sciences, School of Veterinary Medicine, University of Zambia, Lusaka 10101, Zambia
| | - Bernard Mudenda Hang'ombe
- Department of Para-Clinical Studies, School of Veterinary Medicine, University of Zambia, Lusaka 10101, Zambia
- Africa Centre of Excellence for Infectious Diseases of Humans and Animals, School of Veterinary Medicine, University of Zambia, Lusaka 10101, Zambia
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Gunasekara YD, Kottawatta SA, Nisansala T, Wijewickrama IJB, Basnayake YI, Silva-Fletcher A, Kalupahana RS. Antibiotic resistance through the lens of One Health: A study from an urban and a rural area in Sri Lanka. Zoonoses Public Health 2024; 71:84-97. [PMID: 37880923 DOI: 10.1111/zph.13087] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2022] [Revised: 10/11/2023] [Accepted: 10/15/2023] [Indexed: 10/27/2023]
Abstract
This study aimed to investigate and compare the proportion of AMR Escherichia coli (E. coli) between urban (Dompe in the Western province) and rural (Dambana in the Sabaragamuwa province) areas in Sri Lanka. The overall hypothesis of the study is that there is a difference in the proportion of AMR E. coli between the urban and the rural areas. Faecal samples were collected from healthy humans (n = 109), dairy animals (n = 103), poultry (n = 35), wild mammals (n = 81), wild birds (n = 76), soil (n = 80) and water (n = 80) from both areas. A total of 908 E. coli isolates were tested for susceptibility to 12 antimicrobials. Overall, E. coli isolated from urban area was significantly more likely to be resistant than those isolated from rural area. The human domain of the area had a significantly higher prevalence of AMR E. coli, but it was not significantly different in urban (98%) and rural (97%) areas. AMR E. coli isolated from dairy animals, wild animals and water was significantly higher in the urban area compared with the rural area. There was no significant difference in the proportion of multidrug resistance (MDR) E. coli isolated from humans, wild animals and water between the two study sites. Resistant isolates found from water and wild animals suggest contamination of the environment. A multi-sectorial One Health approach is urgently needed to control the spread of AMR and prevent the occurrences of AMR in Sri Lanka.
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Affiliation(s)
- Yasodhara Deepachandi Gunasekara
- Department of Veterinary Public Health and Pharmacology, Faculty of Veterinary Medicine and Animal Science, University of Peradeniya, Peradeniya, Sri Lanka
| | - Sanda Arunika Kottawatta
- Department of Veterinary Public Health and Pharmacology, Faculty of Veterinary Medicine and Animal Science, University of Peradeniya, Peradeniya, Sri Lanka
| | - Thilini Nisansala
- Department of Veterinary Public Health and Pharmacology, Faculty of Veterinary Medicine and Animal Science, University of Peradeniya, Peradeniya, Sri Lanka
- Faculty of Veterinary Medicine, Universiti Malaysia Kelantan, Kota Baru, Kelantan, Malaysia
| | - Isuru Jayamina Bandara Wijewickrama
- Department of Veterinary Public Health and Pharmacology, Faculty of Veterinary Medicine and Animal Science, University of Peradeniya, Peradeniya, Sri Lanka
| | - Yasodha I Basnayake
- Department of Veterinary Public Health and Pharmacology, Faculty of Veterinary Medicine and Animal Science, University of Peradeniya, Peradeniya, Sri Lanka
| | | | - Ruwani Sagarika Kalupahana
- Department of Veterinary Public Health and Pharmacology, Faculty of Veterinary Medicine and Animal Science, University of Peradeniya, Peradeniya, Sri Lanka
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Paintsil EK, Ofori LA, Akenten CW, Zautner AE, Mbwana J, Khan NA, Lusingu JPA, Kaseka J, Minja DTR, Gesase S, Jaeger A, Lamshöft M, May J, Obiri-Danso K, Krumkamp R, Dekker D. Antibiotic-Resistant Arcobacter spp. in commercial and smallholder farm animals in Asante Akim North Municipality, Ghana and Korogwe Town Council, Tanzania: a cross-sectional study. Gut Pathog 2023; 15:63. [PMID: 38042805 PMCID: PMC10693124 DOI: 10.1186/s13099-023-00588-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/27/2023] [Accepted: 11/21/2023] [Indexed: 12/04/2023] Open
Abstract
BACKGROUND Arcobacter species are considered emerging foodborne pathogens that can potentially cause serious infections in animals and humans. This cross-sectional study determined the frequency of potentially pathogenic Arcobacter spp. in both commercial and smallholder farm animals in Ghana and Tanzania. A total of 1585 and 1047 (poultry and livestock) samples were collected in Ghana and Tanzania, respectively. Selective enrichment media, along with oxidase and Gram testing, were employed for isolation of suspected Arcobacter spp. and confirmation was done using MALDI-TOF MS. Antibiotic susceptibility was assessed through disk diffusion method and ECOFFs were generated, for interpretation, based on resulting inhibition zone diameters. RESULTS The overall Arcobacter frequency was higher in Ghana (7.0%, n = 111) than in Tanzania (2.0%, n = 21). The frequency of Arcobacter in commercial farms in Ghana was 10.3% (n/N = 83/805), while in Tanzania, it was 2.8% (n/N = 12/430). Arcobacter was detected in only 3.6% (n/N = 28/780) of the samples from smallholder farms in Ghana and 1.5% (n/N = 9/617) of the samples from Tanzania. For commercial farms, in Ghana, the presence of Arcobacter was more abundant in pigs (45.1%, n/N = 37/82), followed by ducks (38.5%, n/N = 10/26) and quails (35.7%, n/N = 10/28). According to MALDI-TOF-based species identification, Arcobacter butzleri (91.6%, n/N = 121/132), Arcobacter lanthieri (6.1%, n/N = 8/132), and Arcobacter cryaerophilus (2.3%, n/N = 3/132) were the only three Arcobacter species detected at both study sites. Almost all of the Arcobacter from Ghana (98.2%, n/N = 109/111) were isolated during the rainy season. The inhibition zone diameters recorded for penicillin, ampicillin, and chloramphenicol allowed no determination of an epidemiological cut-off value. However, the results indicated a general resistance to these three antimicrobials. Multidrug resistance was noted in 57.1% (n/N = 12/21) of the Arcobacter isolates from Tanzania and 45.0% (n/N = 50/111) of those from Ghana. The type of farm (commercial or smallholder) and source of the sample (poultry or livestock) were found to be associated with multi-drug resistance. CONCLUSIONS The high levels of MDR Arcobacter detected from farms in both countries call for urgent attention and comprehensive strategies to mitigate the spread of antimicrobial resistance in these pathogens.
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Affiliation(s)
- Ellis Kobina Paintsil
- Kumasi Centre for Collaborative Research in Tropical Medicine (KCCR), South-End, Asuogya Road, 039-5028, Kumasi, Ghana.
- Department of Theoretical and Applied Biology, Kwame Nkrumah University of Science and Technology, 039-5028, Kumasi, Ghana.
- Department of Implementation Research, One Health Bacteriology Group, Bernhard Nocht Institute for Tropical Medicine (BNITM), Bernhard-Nocht-Str. 74, 20359, Hamburg, Germany.
| | - Linda Aurelia Ofori
- Department of Theoretical and Applied Biology, Kwame Nkrumah University of Science and Technology, 039-5028, Kumasi, Ghana
| | - Charity Wiafe Akenten
- Kumasi Centre for Collaborative Research in Tropical Medicine (KCCR), South-End, Asuogya Road, 039-5028, Kumasi, Ghana
- Department of Theoretical and Applied Biology, Kwame Nkrumah University of Science and Technology, 039-5028, Kumasi, Ghana
- Department of Implementation Research, One Health Bacteriology Group, Bernhard Nocht Institute for Tropical Medicine (BNITM), Bernhard-Nocht-Str. 74, 20359, Hamburg, Germany
| | - Andreas E Zautner
- Institute of Medical Microbiology and Hospital Hygiene, Medical Faculty, Otto-Von-Guericke University Magdeburg, 39120, Magdeburg, Germany
| | - Joyce Mbwana
- National Institute for Medical Research (NIMR), Tanga Centre, Tanga, Tanzania
| | - Neyaz Ahmed Khan
- Department of Implementation Research, One Health Bacteriology Group, Bernhard Nocht Institute for Tropical Medicine (BNITM), Bernhard-Nocht-Str. 74, 20359, Hamburg, Germany
| | - John P A Lusingu
- National Institute for Medical Research (NIMR), Tanga Centre, Tanga, Tanzania
| | - Joseph Kaseka
- National Institute for Medical Research (NIMR), Tanga Centre, Tanga, Tanzania
| | - Daniel T R Minja
- National Institute for Medical Research (NIMR), Tanga Centre, Tanga, Tanzania
| | - Samwel Gesase
- National Institute for Medical Research (NIMR), Tanga Centre, Tanga, Tanzania
| | - Anna Jaeger
- Bernhard Nocht Institute for Tropical Medicine (BNITM), Bernhard-Nocht-Str. 74, 20359, Hamburg, Germany
| | - Maike Lamshöft
- Bernhard Nocht Institute for Tropical Medicine (BNITM), Bernhard-Nocht-Str. 74, 20359, Hamburg, Germany
- German Centre for Infection Research (DZIF), Partner Site Hamburg-Lübeck-Borstel-Riems, 20359, Hamburg, Germany
| | - Jürgen May
- Bernhard Nocht Institute for Tropical Medicine (BNITM), Bernhard-Nocht-Str. 74, 20359, Hamburg, Germany
- German Centre for Infection Research (DZIF), Partner Site Hamburg-Lübeck-Borstel-Riems, 20359, Hamburg, Germany
- Tropical Medicine II, University Medical Center Hamburg-Eppendorf (UKE), 20251, Hamburg, Germany
| | - Kwasi Obiri-Danso
- Department of Theoretical and Applied Biology, Kwame Nkrumah University of Science and Technology, 039-5028, Kumasi, Ghana
| | - Ralf Krumkamp
- Bernhard Nocht Institute for Tropical Medicine (BNITM), Bernhard-Nocht-Str. 74, 20359, Hamburg, Germany
- German Centre for Infection Research (DZIF), Partner Site Hamburg-Lübeck-Borstel-Riems, 20359, Hamburg, Germany
| | - Denise Dekker
- Department of Implementation Research, One Health Bacteriology Group, Bernhard Nocht Institute for Tropical Medicine (BNITM), Bernhard-Nocht-Str. 74, 20359, Hamburg, Germany
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10
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Kisoo L, Muloi DM, Oguta W, Ronoh D, Kirwa L, Akoko J, Fèvre EM, Moodley A, Wambua L. Practices and drivers for antibiotic use in cattle production systems in Kenya. One Health 2023; 17:100646. [PMID: 38024269 PMCID: PMC10665206 DOI: 10.1016/j.onehlt.2023.100646] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2023] [Revised: 10/23/2023] [Accepted: 10/26/2023] [Indexed: 12/01/2023] Open
Abstract
Understanding antibiotic use in livestock systems is key in combating antimicrobial resistance (AMR) and developing effective interventions. Using a standardised questionnaire, we investigated the patterns and drivers of antibiotic use in 165 cattle farms across the three major cattle production systems in Kenya: intensive, extensive, and semi-intensive systems across in three counties: Machakos, Makueni and Narok in Kenya. We used a causal diagram to inform regression models to explore the drivers of antibiotic use in the study farms. Antibiotic use was reported in 92.7% of farms, primarily for prophylactic purposes. Oxytetracycline, penicillin, and streptomycin were the most used antibiotics to treat and control the most reported diseases including mastitis, diarrhoea and East Coast fever (ECF). Regression analysis indicated a positive association between the frequency of antibiotic use at the farm level and both disease incidence and herd size. Conversely, farms that provided cattle with appropriate housing were less likely to use antibiotics, and there was no difference in antibiotic use between those who consulted with veterinarians or sourced antibiotics directly from animal health providers. Our study highlights the complexities around understanding the interplay between practices and drivers of antibiotic use. It also underscores the necessity to enhance education regarding the appropriate usage of antibiotics among cattle farmers, encourage the adoption of proper herd management practices which may reduce disease burden, and reinforce veterinary services and supportive legislation to promote the prudent use of antimicrobials.
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Affiliation(s)
- Lydiah Kisoo
- Animal and Human Health Department, International Livestock Research Institute, Nairobi, Kenya
- Institute of Infection, Veterinary and Ecological Sciences, University of Liverpool, Neston, United Kingdom
| | - Dishon M. Muloi
- Animal and Human Health Department, International Livestock Research Institute, Nairobi, Kenya
- Institute of Infection, Veterinary and Ecological Sciences, University of Liverpool, Neston, United Kingdom
| | - Walter Oguta
- Animal and Human Health Department, International Livestock Research Institute, Nairobi, Kenya
| | - Daisy Ronoh
- Animal and Human Health Department, International Livestock Research Institute, Nairobi, Kenya
| | - Lynn Kirwa
- Animal and Human Health Department, International Livestock Research Institute, Nairobi, Kenya
| | - James Akoko
- Animal and Human Health Department, International Livestock Research Institute, Nairobi, Kenya
| | - Eric M. Fèvre
- Animal and Human Health Department, International Livestock Research Institute, Nairobi, Kenya
- Institute of Infection, Veterinary and Ecological Sciences, University of Liverpool, Neston, United Kingdom
| | - Arshnee Moodley
- Animal and Human Health Department, International Livestock Research Institute, Nairobi, Kenya
- Department of Veterinary and Animal Sciences, University of Copenhagen, Frederiksberg C, Denmark
| | - Lillian Wambua
- Animal and Human Health Department, International Livestock Research Institute, Nairobi, Kenya
- World Organization for Animal Health, Sub-Regional Representation for East Africa, Kenya
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11
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Mudenda S, Malama S, Munyeme M, Matafwali SK, Kapila P, Katemangwe P, Mainda G, Mukubesa AN, Hadunka MA, Muma JB. Antimicrobial resistance profiles of Escherichia coli isolated from laying hens in Zambia: implications and significance on one health. JAC Antimicrob Resist 2023; 5:dlad060. [PMID: 37223392 PMCID: PMC10202439 DOI: 10.1093/jacamr/dlad060] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2023] [Accepted: 04/27/2023] [Indexed: 05/25/2023] Open
Abstract
Background Antimicrobial resistance (AMR) has been deepening in the layer poultry sector in Zambia partly due to the inappropriate use of antimicrobials. Escherichia coli (E. coli), a commensal and zoonotic bacterium, can potentially be a source of AMR. Objectives This study assessed the phenotypic AMR profiles of E. coli isolated from the apparent health-laying hens in Lusaka and Copperbelt provinces of Zambia. Methods A cross-sectional study was conducted between September 2020 and April 2021 in which 365 cloacal swabs were collected from 77-layer farms based in Lusaka and Copperbelt provinces of Zambia. E. coli isolation and identification were done using cultural and biochemical properties and confirmed using the 16S rRNA gene sequencing. Antimicrobial susceptibility testing (AST) was done using the Kirby-Bauer disc-diffusion method. Data analysis was done using WHONET 2020 and Stata v.16.1. Results Of the 365 samples, E. coli was isolated from 92.9% (n = 339). The AMR was detected in 96.5% (n = 327) of the isolates, of which 64.6% (n = 219) were multidrug-resistant (MDR). E. coli was highly resistant to tetracycline (54.6%) and ampicillin (54%) but showed low resistance to meropenem (0.9%), ceftazidime (6.2%) and chloramphenicol (8.8%). Conclusion This study found a high prevalence of E. coli resistant to some commonly used antibiotics in poultry, which is a public health concern because of the potential contamination of eggs and layers of chicken meat that enter the food chain. Urgent attention is needed, including strengthening antimicrobial stewardship and surveillance programmes in layer poultry production in Zambia.
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Affiliation(s)
| | - Sydney Malama
- Department of Biological Sciences, School of Natural Sciences, University of Zambia, Lusaka, Zambia
| | - Musso Munyeme
- Department of Disease Control, School of Veterinary Medicine, University of Zambia, Lusaka, Zambia
| | - Scott Kaba Matafwali
- Clinical Research Department, Faculty of Infectious and Tropical Diseases, London School of Hygiene & Tropical Medicine, London, UK
| | - Penjaninge Kapila
- Department of Disease Control, School of Veterinary Medicine, University of Zambia, Lusaka, Zambia
| | - Patrick Katemangwe
- Department of Disease Control, School of Veterinary Medicine, University of Zambia, Lusaka, Zambia
| | - Geoffrey Mainda
- Department of Veterinary Services, Central Veterinary Research Institute, Ministry of Fisheries and Livestock, Lusaka, Zambia
| | | | - Mwendalubi Albert Hadunka
- Department of Animal Health, Centre for Infectious Disease Research in Zambia (CIDRZ), Lusaka, Zambia
| | - John Bwalya Muma
- Department of Disease Control, School of Veterinary Medicine, University of Zambia, Lusaka, Zambia
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12
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Lepczyński A, Herosimczyk A, Bucław M, Adaszyńska-Skwirzyńska M. Antibiotics in avian care and husbandry-status and alternative antimicrobials. PHYSICAL SCIENCES REVIEWS 2023. [DOI: 10.1515/psr-2021-0123] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
Abstract
Undoubtedly, the discovery of antibiotics was one of the greatest milestones in the treatment of human and animal diseases. Due to their over-use mainly as antibiotic growth promoters (AGP) in livestock farming, antimicrobial resistance has been reported with increasing intensity, especially in the last decades. In order to reduce the scale of this phenomenon, initially in the Scandinavian countries and then throughout the entire European Union, a total ban on the use of AGP was introduced, moreover, a significant limitation in the use of these feed additives is now observed almost all over the world. The withdrawal of AGP from widespread use has prompted investigators to search for alternative strategies to maintain and stabilize the composition of the gut microbiota. These strategies include substances that are used in an attempt to stimulate the growth and activity of symbiotic bacteria living in the digestive tract of animals, as well as living microorganisms capable of colonizing the host’s gastrointestinal tract, which can positively affect the composition of the intestinal microbiota by exerting a number of pro-health effects, i.e., prebiotics and probiotics, respectively. In this review we also focused on plants/herbs derived products that are collectively known as phytobiotic.
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Affiliation(s)
- Adam Lepczyński
- Department of Physiology, Cytobiology and Proteomics , West Pomeranian University of Technology , Szczecin , Poland
| | - Agnieszka Herosimczyk
- Department of Physiology, Cytobiology and Proteomics , West Pomeranian University of Technology , Szczecin , Poland
| | - Mateusz Bucław
- Department of Monogastric Animal Sciences , West Pomeranian University of Technology , Szczecin , Poland
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13
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Samuel M, Fredrick Wabwire T, Tumwine G, Waiswa P. Antimicrobial Usage by Small-Scale Commercial Poultry Farmers in Mid-Western District of Masindi Uganda: Patterns, Public Health Implications, and Antimicrobial Resistance of E. coli. Vet Med Int 2023; 2023:6644271. [PMID: 37122610 PMCID: PMC10139818 DOI: 10.1155/2023/6644271] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2023] [Revised: 04/05/2023] [Accepted: 04/15/2023] [Indexed: 05/02/2023] Open
Abstract
Background Poultry production in Uganda is growing at a fast rate due to increasing demand, notwithstanding, poor husbandry practices, and diseases, prompting farmers to rear healthy productive flocks with antimicrobials. The study evaluated the knowledge and practices as regards the use of antibiotics among poultry farmers in Masindi district and determined the antibiotic susceptibility profiles of E. coli strains from chickens. Methods A cross-sectional study using a closed-end questionnaire was conducted in 140 selected small-scale commercial poultry farms in Masindi district between June and December, 2020. Analyzed qualitative data were presented as frequencies, percentages, and their 95% confidence intervals (95% CI). Fecal swabs from chickens were inoculated onto a MacConkey agar, and E. coli was confirmed by standard biochemical tests. Antimicrobial susceptibility was determined by the disk diffusion method for 7 antibiotics. Results Most farmers (74%) used antibiotics, mainly tetracycline (51.4%) and sulfonamides (28.6%), given to the chicks (45%), for both curative and prophylaxis purposes (80%), and via drinking water (67%). Farmers mainly used antibiotics recommended by the veterinarian (76.4%), more than relying on experience (10.7%), while 45% were involved in self-medicating the birds. On choosing the correct dosage, 45.7% read the instruction, and 42.9% consulted a veterinarian. Only 10.7% observed the drug withdrawal period, while 53.6% consumed eggs at home or sold eggs (35.7%) from birds under treatment. Of the 200 E. coli strains, 90 (45.0%) were resistant to one drug, 74 (37.0%) to two, and multidrug resistance to three classes of antibiotics was 36 (18.0%). Overall, E. coli resistance to tetracycline was (69.0%), ampicillin (37.0%), sulfonamides (36.0%), and to kanamycin (1.5%). Conclusions The small-scale poultry farmers frequently use antimicrobial drugs, mainly tetracycline and sulfonamides for curative and prophylaxis. Thus, enforcing measures against antibiotic use supported by a strong veterinary service sector and farmers' training on judicious use of antimicrobials are needed.
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Affiliation(s)
- Majalija Samuel
- College of Veterinary Medicine Animal Resources and Biosecurity, Makerere University, P.O Box 7062, Kampala, Uganda
| | - Tony Fredrick Wabwire
- College of Veterinary Medicine Animal Resources and Biosecurity, Makerere University, P.O Box 7062, Kampala, Uganda
| | - Gabriel Tumwine
- College of Veterinary Medicine Animal Resources and Biosecurity, Makerere University, P.O Box 7062, Kampala, Uganda
| | - Peter Waiswa
- College of Veterinary Medicine Animal Resources and Biosecurity, Makerere University, P.O Box 7062, Kampala, Uganda
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14
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Mudenda S, Matafwali SK, Malama S, Munyeme M, Yamba K, Katemangwe P, Siluchali G, Mainda G, Mukuma M, Bumbangi FN, Mirisho R, Muma JB. Prevalence and antimicrobial resistance patterns of Enterococcus species isolated from laying hens in Lusaka and Copperbelt provinces of Zambia: a call for AMR surveillance in the poultry sector. JAC Antimicrob Resist 2022; 4:dlac126. [PMID: 36570686 PMCID: PMC9772873 DOI: 10.1093/jacamr/dlac126] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2022] [Accepted: 11/25/2022] [Indexed: 12/24/2022] Open
Abstract
Background The use of antimicrobials in layer poultry production for improved production, growth promotion, prophylaxis and treatment purposes has contributed to the development of antimicrobial resistance (AMR) in poultry. In Zambia, there is a paucity of information on the prevalence and AMR patterns of Enterococcus species isolated from laying hens. Objectives This study investigated the prevalence and AMR patterns of enterococci isolated in layer hens in Lusaka and Copperbelt provinces of Zambia. Methods A cross-sectional study was conducted from September 2020 to April 2021. Three hundred and sixty-five pooled cloacal swab samples were collected from 77 layer poultry farms. Enterococci identification and confirmation were performed using Analytical Profile Index (API 20 STREP) and 16S rRNA sequencing, respectively. A panel of nine antibiotics was used for antibiotic susceptibility testing and interpreted according to the CLSI 2020 guidelines. Data were analysed using SPSS version 23 and WHONET 2020. Results A total of 308 (83%) single Enterococcus species isolates were obtained and showed resistance to tetracycline (80.5%), erythromycin (53.6%), quinupristin/dalfopristin (53.2%), ampicillin (36.72%), vancomycin (32.8%), linezolid (30.2%), ciprofloxacin (11.0%), nitrofurantoin (6.5%) and chloramphenicol (3.9%). The prevalence of enterococci resistant to at least one antibiotic was 99.4% (n = 306), of which 86% (n = 265) were MDR. Conclusions This study found a high prevalence of antimicrobial-resistant enterococci. The presence of MDR requires urgent intervention and implementation of AMR surveillance strategies and antimicrobial stewardship programmes in layer poultry production in Zambia.
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Affiliation(s)
- Steward Mudenda
- Department of Pharmacy, School of Health Sciences, University of Zambia, Lusaka, Zambia.,Department of Disease Control, School of Veterinary Medicine, University of Zambia, Lusaka, Zambia
| | - Scott Kaba Matafwali
- Clinical Research Department, Faculty of Infectious and Tropical Diseases, London School of Hygiene & Tropical Medicine, London, UK
| | - Sydney Malama
- Department of Biological Sciences, School of Natural Sciences, University of Zambia, Lusaka, Zambia
| | - Musso Munyeme
- Department of Disease Control, School of Veterinary Medicine, University of Zambia, Lusaka, Zambia
| | - Kaunda Yamba
- Department of Pathology & Microbiology Laboratory, University Teaching Hospitals, Lusaka, Zambia
| | - Patrick Katemangwe
- Department of Disease Control, School of Veterinary Medicine, University of Zambia, Lusaka, Zambia
| | - Godfrey Siluchali
- Department of Disease Control, School of Veterinary Medicine, University of Zambia, Lusaka, Zambia.,Department of Anatomy and Physiological Sciences, Institute of Basic and Biomedical Sciences, Levy Mwanawasa Medical University, Lusaka, Zambia
| | - Geoffrey Mainda
- Department of Veterinary Services, Central Veterinary Research Institute, Ministry of Fisheries and Livestock, Lusaka, Zambia
| | - Mercy Mukuma
- Department of Food Science and Nutrition, School of Agricultural Sciences, University of Zambia, Lusaka, Zambia
| | - Flavien Nsoni Bumbangi
- Department of Medicine, School of Medicine, Eden University, P.O. Box 37727, Lusaka, Zambia
| | - Robert Mirisho
- Department of Public Health, St Francis University College of Health and Allied Sciences, Ifakara, Tanzania
| | - John Bwalya Muma
- Department of Disease Control, School of Veterinary Medicine, University of Zambia, Lusaka, Zambia
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Ulomi WJ, Mgaya FX, Kimera Z, Matee MI. Determination of Sulphonamides and Tetracycline Residues in Liver Tissues of Broiler Chicken Sold in Kinondoni and Ilala Municipalities, Dar es Salaam, Tanzania. Antibiotics (Basel) 2022; 11:antibiotics11091222. [PMID: 36140001 PMCID: PMC9495219 DOI: 10.3390/antibiotics11091222] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2022] [Revised: 08/19/2022] [Accepted: 09/06/2022] [Indexed: 11/16/2022] Open
Abstract
In Tanzania, the increased demand for animal-derived foods, particularly eggs, meat, and milk, has resulted in the intensification of farming systems with the use of antimicrobials, particularly sulphonamides and tetracyclines. According to the FAO/WHO Codex Alimentarius commission, concentrations of antimicrobial residues in food exceeding the acceptable daily intake (ADI) and maximum residual limit (MRL) pose a health risk to consumers. This cross-sectional study determined the concentrations of sulphonamide and tetracycline residues in the liver tissues of commercial broiler chicken sold in Dar es Salaam, Tanzania, to find out whether the amounts of residues were within the legally permitted and acceptable limits in food. We conveniently sampled eighty-four liver tissue samples from broiler chicken sold in two out of six large markets in Dar es Salaam. The amounts of tetracycline and sulphonamide residues were determined using an ELISA kit (Shenzhen Lvshiyuan Biotechnology Company, Shenzhen, China). The results showed that all 100% (n = 84) samples contained tetracycline residues and 21.4% (n = 18) samples contained sulphonamide residues, while 21.4% (n = 18) contained both sulphonamide and tetracycline residues. The concentrations of sulphonamide residues were within the maximum residual limit (MRL). However, 90.5% (n = 76) of the samples had tetracycline levels that exceeded the acceptable daily intake (ADI) range 0–3 µg/kg and 13.1% (n = 11) of the samples had tetracycline levels that exceeded the maximum residue limit of 300 µg/kg. The observed presence of antibiotic residues in the poultry tissues poses a health risk to consumers, and may lead to antimicrobial resistance micro-organisms, which may spread to humans and animals via the environment. Vigorous surveillance and observation of the withdrawal periods should be advocated to ensure that the food from animals is safe with regard to the residues of veterinary medicines.
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Affiliation(s)
- Winstone J. Ulomi
- Tanzania Bureau of Standards, P.O. Box 9524, Dar es Salaam 16103, Tanzania
- Department of Microbiology and Immunology, Muhimbili University of Health and Allied Sciences, P.O. Box 65001, Dar es Salaam 11103, Tanzania
- Correspondence:
| | - Fauster X. Mgaya
- Department of Microbiology and Immunology, Muhimbili University of Health and Allied Sciences, P.O. Box 65001, Dar es Salaam 11103, Tanzania
| | - Zuhura Kimera
- Department of Microbiology and Immunology, Muhimbili University of Health and Allied Sciences, P.O. Box 65001, Dar es Salaam 11103, Tanzania
| | - Mecky I. Matee
- Department of Microbiology and Immunology, Muhimbili University of Health and Allied Sciences, P.O. Box 65001, Dar es Salaam 11103, Tanzania
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Mudenda S, Mukosha M, Godman B, Fadare J, Malama S, Munyeme M, Hikaambo CN, Kalungia AC, Hamachila A, Kainga H, Bumbangi FN, Daka V, Mfune RL, Mainda G, Mufwambi W, Mpundu P, Kasanga M, Saad SAM, Muma JB. Knowledge, Attitudes, and Practices of Community Pharmacy Professionals on Poultry Antibiotic Dispensing, Use, and Bacterial Antimicrobial Resistance in Zambia: Implications on Antibiotic Stewardship and WHO AWaRe Classification of Antibiotics. Antibiotics (Basel) 2022; 11:1210. [PMID: 36139990 PMCID: PMC9495135 DOI: 10.3390/antibiotics11091210] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2022] [Revised: 08/14/2022] [Accepted: 08/17/2022] [Indexed: 11/16/2022] Open
Abstract
Globally, the inappropriate dispensing and use of antibiotics in animals has contributed to the development of bacterial antimicrobial resistance (AMR). In Zambia, there is insufficient information among community pharmacy professionals on antibiotic use (ABU) and AMR in food-producing animals. This study assessed community pharmacy professionals' knowledge, attitudes, and practices regarding poultry antibiotic dispensing, use, and bacterial AMR in the Lusaka district of Zambia. A cross-sectional study was conducted among 178 community pharmacy professionals between February and April 2022 using a semi-structured questionnaire. Data were analyzed using Stata version 17. Of the total participants (n = 178), 51.1% (n = 91) were pharmacists. The most dispensed antibiotic was oxytetracycline, a Watch antibiotic, mainly without prescriptions. Good knowledge of ABU and AMR was associated with work experience for more than one year (p = 0.016), while good practices were associated with male gender (p = 0.039) and work experience of more than one year (p = 0.011). The study found moderate knowledge, positive attitudes, and moderate practices of pharmacy professionals on poultry ABU and AMR. There was high dispensing of poultry antibiotics without prescriptions, which calls for strict implementation of antimicrobial stewardship and surveillance programs in poultry production in Zambia to reduce AMR.
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Affiliation(s)
- Steward Mudenda
- Department of Pharmacy, School of Health Sciences, University of Zambia, Lusaka P.O. Box 50110, Zambia
- Department of Disease Control, School of Veterinary Medicine, University of Zambia, Lusaka P.O. Box 32379, Zambia
- Africa Center of Excellence for Infectious Diseases of Humans and Animals, University of Zambia, Lusaka P.O. Box 32379, Zambia
| | - Moses Mukosha
- Department of Pharmacy, School of Health Sciences, University of Zambia, Lusaka P.O. Box 50110, Zambia
| | - Brian Godman
- Department of Public Health Pharmacy and Management, School of Pharmacy, Sefako Makgatho Health Sciences University, Pretoria 0208, South Africa
- Centre of Medical and Bio-Allied Health Sciences Research, Ajman University, Ajman 346, United Arab Emirates
- Department of Pharmacoepidemiology, Strathclyde Institute of Pharmacy and Biomedical Science (SIPBS), University of Strathclyde, Glasgow G4 0RE, UK
| | - Joseph Fadare
- Department of Pharmacology and Therapeutics, Ekiti State University College of Medicine, Ado-Ekiti 362103, Nigeria
| | - Sydney Malama
- Department of Biological Sciences, School of Natural Sciences, University of Zambia, Lusaka P.O. Box 32379, Zambia
| | - Musso Munyeme
- Department of Disease Control, School of Veterinary Medicine, University of Zambia, Lusaka P.O. Box 32379, Zambia
| | | | - Aubrey Chichonyi Kalungia
- Department of Pharmacy, School of Health Sciences, University of Zambia, Lusaka P.O. Box 50110, Zambia
| | - Audrey Hamachila
- Department of Pharmacy, School of Health Sciences, University of Zambia, Lusaka P.O. Box 50110, Zambia
| | - Henson Kainga
- Department of Disease Control, School of Veterinary Medicine, University of Zambia, Lusaka P.O. Box 32379, Zambia
- Department of Veterinary Epidemiology and Public Health, Faculty of Veterinary Medicine, University of Agriculture and Natural Resources, Lilongwe P.O. Box 219, Malawi
| | - Flavien Nsoni Bumbangi
- Department of Disease Control, School of Veterinary Medicine, University of Zambia, Lusaka P.O. Box 32379, Zambia
- School of Medicine, Eden University, Lusaka P.O. Box 37727, Zambia
| | - Victor Daka
- Africa Center of Excellence for Infectious Diseases of Humans and Animals, University of Zambia, Lusaka P.O. Box 32379, Zambia
- Michael Chilufya Sata School of Medicine, Copperbelt University, Ndola P.O. Box 21692, Zambia
| | - Ruth Lindizyani Mfune
- Michael Chilufya Sata School of Medicine, Copperbelt University, Ndola P.O. Box 21692, Zambia
| | - Geoffrey Mainda
- Department of Veterinary Services, Central Veterinary Research Institute, Ministry of Fisheries and Livestock, Lusaka P.O. Box 50060, Zambia
| | - Webrod Mufwambi
- Department of Pharmacy, School of Health Sciences, University of Zambia, Lusaka P.O. Box 50110, Zambia
| | - Prudence Mpundu
- Department of Environmental and Occupational Health, Levy Mwanawasa Medical University, School of Health Sciences, Lusaka P.O. Box 33991, Zambia
| | - Maisa Kasanga
- College of Public Health, Zhengzhou University, Zhengzhou 450001, China
| | - Shereen Ahmed Mohammed Saad
- Africa Center of Excellence for Infectious Diseases of Humans and Animals, University of Zambia, Lusaka P.O. Box 32379, Zambia
- College of Veterinary Science, University of Bahr El-Ghazal, Wau P.O. Box 10739, South Sudan
| | - John Bwalya Muma
- Department of Disease Control, School of Veterinary Medicine, University of Zambia, Lusaka P.O. Box 32379, Zambia
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Antimicrobial Resistance Pattern of Escherichia coli Isolates from Small Scale Dairy Cattle in Dar es Salaam, Tanzania. Animals (Basel) 2022; 12:ani12141853. [PMID: 35883400 PMCID: PMC9311648 DOI: 10.3390/ani12141853] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2022] [Revised: 07/03/2022] [Accepted: 07/06/2022] [Indexed: 11/28/2022] Open
Abstract
Simple Summary Dearth of information on antimicrobial resistance (AMR) in small-scale dairy cattle in Dar es Salaam, the commercial city of Tanzania, prompted us to conduct this study. The objective was to determine the different levels of resistance phenotypical patterns among Escherichia coli (E. coli) isolates from rectal swabs of apparently healthy cattle. Antimicrobial resistance occurs when microorganisms develop the ability to tolerate antimicrobial concentrations to which they were initially susceptible. It is a phenomenon of global concern, which is on the rise due to antimicrobial use in food-producing animals. In dairy farms, cattle carry high levels of AMR Escherichia coli (E. coli), and may act as a potential reservoir. The study revealed that resistance to ampicillin, cefotaxime, tetracycline and trimethoprim/sulfamethoxazole was the most frequent. Resistance to nalidixic acid, ciprofloxacin, chloramphenicol, and gentamycin was also observed among the E. coli isolates, but with lower percentages. E. coli resistant to third generation cephalosporins was also detected. The results of the current study give an insight into the status of antimicrobial resistance and multidrug resistance in small-scale dairy cattle in Dar es Salaam, Tanzania. The findings call for further research, prudent antimicrobial use, and surveillance initiatives. Abstract In Tanzania, information on antimicrobial resistance in small-scale dairy cattle is scarce. This cross-sectional study was conducted to determine the different levels and pattern of antimicrobial resistance (AMR), in 121 Escherichia coli isolated from rectal swab of 201 apparently healthy small-scale dairy cattle in Dar es Salaam, Tanzania. Isolation and identification of E. coli were carried out using enrichment media, selective media, and biochemical tests. Antimicrobial susceptibility testing was carried out using the Kirby–Bauer disk diffusion method on Mueller-Hinton agar (Merck), according to the recommendations of Clinical and Laboratory Standards Institute (CLSI). Resistance was tested against ampicillin, gentamicin, chloramphenicol, trimethoprim-sulfamethoxazole, tetracycline, nalidixic acid, ciprofloxacin and cefotaxime. Resistance to almost all antimicrobial agents was observed. The agents to which resistance was demonstrated most frequently were ampicillin (96.7%), cefotaxime (95.0%), tetracycline (50.4%), trimethoprim-sulfamethoxazole (42.1%) and nalidixic acid (33.1%). In this case, 20 extended-spectrum beta-lactamases (ESBLs) producing E. coli were identified. 74.4% (90/121) of the isolates were Multidrug resistant (MDR), ranging from a combination of three to 8 different classes. The most frequently observed phenotypes were AMP-SXT-CTX with a prevalence of 12.4%, followed by the combination AMP-CTX with 10.7% and TE-AMP-CTX and NA + TE + AMP + CTX with 8.3% each. The high prevalence and wide range of AMR calls for prudent antimicrobial use.
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