Dr Oladapo Oyedeji Oludairo is a lecturer, clinician, laboratorian, researcher and Head of the Department of Veterinary Public Health and Preventive Medicine, Faculty of Veterinary Medicine, University of Ilorin.
He graduated from the University of Ibadan, Nigeria with a Doctor of Veterinary Medicine degree. He obtained both MSc and PhD degrees in Veterinary Public Health and Preventive Medicine from Ahmadu Bello University, Zaria, Nigeria.
He has over 25 years of experience in practice (poultry, small animal, large animal medicine), wildlife medicine/research, zoonoses, antibiotic resistance and surveillance. In the last 8 years, he taught undergraduates and postgraduates Public Health, disease surveillance and epidemiology. His research interest is Public Health/Preventive Medicine, Epidemiology, Disease Surveillance, Food Hygiene, Bacteriology especially, Enterobacteriaceae and Antimicrobial Resistance (AMR). He is involved in various Public Health, Disease Prevention and One Healt
RESEARCH, TEACHING, or OTHER INTERESTS
Public Health, Environmental and Occupational Health, Veterinary, Applied Microbiology and Biotechnology
A One Health Approach to Food Safety in Urban Nigeria: Investigating Salmonella contamination and Knowledge, Attitude and Practices across the Ilorin beef slaughterhouse-value-chain Oladapo Oludairo, Bukola Richards Alexandria Journal of Veterinary Sciences, 2026 Beef and its products can become contaminated with organisms like zoonotic Salmonella spp. through contact with faeces, hides and other environmental objects in the urban slaughterhouse value chain. Religious, traditional and socioeconomical practices among abattoir workers could also be contributory factors, world over. The one health integration of animal, human and environmental health may prevent and reduce contamination and zoonotic risks. The study aimed to interrogate beef Salmonella contamination and staff cultural practices in urban Ilorin slaughterhouses with the hindsight of holistic health application to ensure food safety. A cross-sectional study was conducted in four slaughterhouses in Urban-Ilorin, Nigeria, to collect 414 samples for Salmonella contamination determination and its antimicrobial sensitivity tests using conventional isolation/analytic methods and polymerase chain reaction (PCR). Seventy-two questionnaires were administered to assess staff knowledge, attitude and practices. Descriptive statistics were employed in the study. An overall multiple antimicrobial resistant (AMR) Salmonella contamination of 5.31% was recorded, while, 1.9%, 1.0%, 0.5%, 0.2%, 0.2%, 0%, 0%,1.5% and 0% were obtained for muscle, lung, liver, large/small intestine, hide, mesenteric lymph-node, kidney, cattle faeces, and human stool, respectively. The genes invA (100%) and tetA (82%) were identified in the isolated Salmonella spp. The staff cultural assessment was found to be poor (57.46%), poor (53.57%) and moderate (77.16%) respectively for knowledge, attitude and practice of food safety procedures. The contamination of beef and the environment by zoonotic Salmonella, which could have been predisposed by the low KAP of urban slaughterhouse workers in this study, underscores the need for a one-health approach to the production of wholesome meat to safeguard public health.
Ecology and epidemiology of Salmonella spp. isolated from the environment and the roles played by wild animals in their maintenance Oladapo Oyedeji Oludairo, Jacob K. P. Kwaga, Junaid Kabir, Paul A. Abdu, Arya Gitanjali, et al. International Journal of One Health, 2023 Salmonella is a ubiquitous organism of public health importance that causes diarrhea and other systemic disease syndromes. The ecology and epidemiology of the organism in addition to the roles played by wild animals are important in understanding its disease. Relevant published peer-reviewed literature was obtained after imputing the study's keywords into the Google search engine. The publications were thereafter saved for the study. The study revealed the ecology of Salmonella is directly related to its epidemiology. These were found to be either positively or negatively influenced by the living and non-living parts of the environment. Free-ranging and captive wild animals can serve as asymptomatic carriers of Salmonella, therefore, help to maintain the cycle of the disease since wildlife serves as reservoir hosts to over 70% of emerging zoonotic diseases. Cockroaches transmit Salmonella through their feces, and body parts and when ingested by birds and animals. The statistically significant over 83% of Salmonella isolation in lizards suggests the reptile could be a source of Salmonella distribution. Snakes, foxes, badgers, rodents, and raccoons have been reported to have Salmonella as a natural component of their gut with the ability to shed the organism often. The high occurrence (>45%) of diverse Salmonella serovars coupled with the fact that some of these animals were handled, kept as pets and consumed by man portends these animals as potential sources of transmission of the organism and the disease. The etiology and epidemiology of Salmonella are overtly affected by several environmental factors which also determine their survival and maintenance. The roles played by wild animals in the relationship, transmission, growth or interaction within and between Salmonella spp., the occurrence, prevalence, and distribution of the organism help maintain the organism in the environment. An understanding of the roles played by the different parts of the environment and wild animals in the ecology and epidemiology of Salmonella can help make informed decisions on the prevention and control of the diseases it causes. This review aimed to investigate the relationship between ecology, epidemiology, and environment, including the roles played by wild animals in the maintenance of the organism and its disease.
Risk Factors Associated with the Occurrence of Salmonella spp. Isolated From Locally Fermented Cattle Milk (Nono) in Gambari Market, Ilorin, Nigeria OO Oludairo, ME Zakariya, A Fasasi, TO Ishola, FE Fabiyi, BA Richards, ... Journal of Current Veterinary Research 8 (1), 14-24 , 2026 2026
A One Health Approach to Food Safety in Urban Nigeria: Investigating Salmonella contamination and Knowledge, Attitude and Practices across the Ilorin beef slaughterhouse-value … OO Oludairo, BA Richards Alexandria Journal of Veterinary Sciences, 0-0 , 2026 2026
Assessment of the knowledge, practice, and perception of anthrax among slaughterhouse workers in Nigeria OO Adebowale, OO Oludairo, AA Oloye, MM Muawiyyah, UB Aliyu, ... Discover Public Health 23 (1), 85 , 2026 2026
Predictors of knowledge, attitude, and practices of anthrax prevention among selected veterinary students in Nigeria and Ghana AO Okunlade, HK Adesokan, FO Jemilehin, AM Oyatoye, BO Ige, ... Discover Public Health 23 (158) , 2026 2026
Molecular Detection of invA Virulence and floR Resistance Genes in Salmonella Enterica Isolated From Hawked RTE Roasted/Spiced Meat (Suya) in Ilorin, Nigeria OO Oludairo, FE Fabiyi, AA Imam, AK Balogun, BA Richards, U Akpabio, ... Assiut Veterinary Medical Journal 72 (188), 637-647 , 2026 2026
Isolation of MDR-Salmonella enterica from RTE Rectum (Abodi) and Small Intestine (Round-about) Offal from Restaurants in Ilorin Metropolis, Kwara State, Nigeria OO OLUDAIRO, AG Fasasi, TO Ishola, ME Zakariya, BA Richards SVU-International Journal of Veterinary Sciences 8 (4), 120-131 , 2025 2025
Prevalence of bovine tuberculosis in cattle slaughtered in abattoirs in Taraba State, Nigeria TF OBIALIGWE, JO AIYEDUN, OO OLUDAIRO, E TANIMU, IB UKO, ... 2025
The Role of Laboratory Professionals in Preventing Contamination of Food by Antimicrobial-Resistant Microorganisms (AMRMs) OO Oludairo, JO Aiyedun, BB Oludairo, MP Oludairo, FE Fabiyi, AA Imam Journal of Applied Veterinary Sciences 10 (1), 109-117 , 2025 2025
Retrospective study on bovine tuberculosis and evaluation of abattoir personnel’s knowledge and preventive practices in Taraba State TF Obialigwe, JO Aiyedun, OO Oludairo, OO Kehinde, IB Uko, E Tanimu Microbes and Infectious Diseases , 2024 2024 Citations: 1
Anthrax outbreak: knowledge, risk practices, and perception among high-risk working groups in Abattoirs and Slaughterhouses in Nigeria AO Oluseun, OO Oludairo, AA Oloye, MM Muawiyyah, BU Aliyu, ... 2024 Citations: 1
Seromolecular surveillance of rabbit haemorrhagic disease virus in Nigeria OB Daodu, JO Shaibu, EA Aderounmu, TO Jolaoso, DO Oluwayelu, ... Tropical Animal Health and Production 55 (5), 327 , 2023 2023 Citations: 1
First Rabbit Haemorrhagic Disease outbreak in Nigeria: Implications for the growing rabbit production industry OB Daodu, OO Oludairo, OB Akanbi, ID Olorunshola, OC Daodu, ... Mansoura Veterinary Medical Journal 24 (2), 22-28 , 2023 2023 Citations: 2
Transmission of Salmonella in humans and animals and its epidemiological factors OO Oludairo, JKP Kwaga, J Kabir, PA Abdu, A Gitanjali, A Perrets, V Cibin, ... Zagazig Veterinary Journal 51 (1), 76-91 , 2023 2023 Citations: 12
Review of the Major Microbial Diseases Associated with High Mortality in Ruminants in Nigeria ID Olorunshola, O Daodu, JO Aiyedun, OO Oludairo, BO Akanbi, ... Nig. J. Pure & Appl. Sci 36 (2), 4592-4606 , 2023 2023 Citations: 2
Assessment of the knowledge of contamination-causing microorganisms in food and food products in Ilorin, Kwara State, Nigeria OO Oludairo, ME Zakariya, JO Aiyedun, OB Daodu, ID Olorunshola, ... Ilorin Journal of Education, 43 (2): 85-99 43 (2), 85-99 , 2023 2023
Prevalence of Salmonella Species in Locally Fermented Milk (Nono) in Gambari Market, Ilorin East Local Government, Kwara State, Nigeria OO Oludairo, ME Zakariya, JO Aiyedun, OB Daodu, ID Olorunshola, ... Zagazig Veterinary Journal 51 (1), 92-100 , 2023 2023 Citations: 2
Ecology and epidemiology of Salmonella spp. isolated from the environment and the roles played by wild animals in their maintenance OO Oludairo, JKP Kwaga, J Kabir, PA Abdu, A Gitanjali, A Perrets environment 15, 17 , 2023 2023 Citations: 10
A 30-year retrospective laboratory surveillance of wildlife rabies in Nigeria IS Tekki, JO Aiyedun, ES Hambolu, L Chabiri, JA Davou, OO Oludairo, ... Journal of Current Veterinary Research 4 (2), 9-21 , 2022 2022 Citations: 1
A review of the International Organization for Standardization (ISO) guidelines for the detection of Salmonella from faeces O OO, K JKP, K Junaid, A PA, P Ann, C Veronica, L AA, A JO Journal of Applied Veterinary Sciences 7 (4), 14-22 , 2022 2022 Citations: 9
A review on Salmonella characteristics, taxonomy, nomenclature with special reference to non-Typhoidal and Typhoidal salmonellosis OO Oludairo, JKP Kwaga, J Kabir, PA Abdu, A Gitanjali, A Perrets, V Cibin, ... Zagazig Veterinary Journal 50 (2), 161-176 , 2022 2022 Citations: 32
MOST CITED SCHOLAR PUBLICATIONS
Neglected zoonotic diseases in Nigeria: Role of the public health veterinarian N Elelu, JO Aiyedun, IG Mohammed, OO Oludairo, IA Odetokun, ... The Pan African Medical Journal 32, 36 , 2019 2019 Citations: 74
Contamination of commercially packaged sachet water and the public health implications: an overview OO Oludairo, JO Aiyedun Bangladesh Society for Veterinary Medicine. , 2015 2015 Citations: 56
A review on Salmonella characteristics, taxonomy, nomenclature with special reference to non-Typhoidal and Typhoidal salmonellosis OO Oludairo, JKP Kwaga, J Kabir, PA Abdu, A Gitanjali, A Perrets, V Cibin, ... Zagazig Veterinary Journal 50 (2), 161-176 , 2022 2022 Citations: 32
The genus Salmonella, isolation and occurrence in wildlife OO Oludairo, JKP Kwaga, AA Dzikwi, J Kabir International Journal of Microbiology and Immunology Research , 2013 2013 Citations: 26
Detection and molecular characterization of a first isolate of rabbit haemorrhagic disease virus in Nigeria OB Daodu, JO Shaibu, AB Richards, EB Folaranmi, S Adegoke, A Ajadi, ... Tropical Animal Health and Production 53 (1), 185 , 2021 2021 Citations: 20
Roles of wildlife in epidemiology of rabies: a mini-review JO Aiyedun, OO Oludairo, ID Olorunshola Journal of Advanced Veterinary and Animal Research 4 (2), 117-124 , 2017 2017 Citations: 20
Effectiveness of biosecurity measures in some selected farms in Kwara state, Nigeria JO Aiyedun, OO Oludairo, ID Olorunsola, OB Daodu, NA Furo Department of Forestry Wildlife and Range Management University of … , 2018 2018 Citations: 19
Prevalence of intestinal parasitism of swine in a North Central State of Nigeria JO Aiyedun, OO Oludairo Journal of Advanced Veterinary and Animal Research 3 (3), 278-281 , 2016 2016 Citations: 19
Detection of inv A virulence gene by polymerase chain reaction (PCR) in Salmonella spp. isolated from captive wildlife OO Oladapo, JKP Kwaga, AA Dzikwi, K Junaid Bio-Genetic Journal , 2013 2013 Citations: 19
Epidemiology and public health implications of parasitic contamination of fruits, vegetables, and water in Kwara Central, Nigeria SD Ola-Fadunsin, AO Adebanjo, DA Abdullah, K Hussain, IM Sanda, ... Annals of Parasitology 68 (2), 339–352 , 2022 2022 Citations: 17
Awareness and antibody detection of Newcastle disease virus in a neglected society in Nigeria OB Daodu, JO Aiyedun, RA Kadir, HM Ambali, OO Oludairo, ... Veterinary world 12 (1), 112 , 2019 2019 Citations: 16
Assessment of antibody assay methods in determination of prevalence of infectious bursal disease among local chickens and guinea fowls in Kwara state, North Central Nigeria OB Daodu, OO Oludairo, JO Aiyedun, HM Ambali, RA Kadir, OC Daodu, ... Veterinary World 11 (8), 1183 , 2018 2018 Citations: 14
Transmission of Salmonella in humans and animals and its epidemiological factors OO Oludairo, JKP Kwaga, J Kabir, PA Abdu, A Gitanjali, A Perrets, V Cibin, ... Zagazig Veterinary Journal 51 (1), 76-91 , 2023 2023 Citations: 12
Prevalence of Salmonella spp. in captive wildlife at the National Zoological Garden Jos, Nigeria OO Oladapo, JKP Kwaga, DA Asabe, K Junaid Current Research in Microbiology and Biotechnology , 2013 2013 Citations: 12
Ecology and epidemiology of Salmonella spp. isolated from the environment and the roles played by wild animals in their maintenance OO Oludairo, JKP Kwaga, J Kabir, PA Abdu, A Gitanjali, A Perrets environment 15, 17 , 2023 2023 Citations: 10
A review of the International Organization for Standardization (ISO) guidelines for the detection of Salmonella from faeces O OO, K JKP, K Junaid, A PA, P Ann, C Veronica, L AA, A JO Journal of Applied Veterinary Sciences 7 (4), 14-22 , 2022 2022 Citations: 9
Isolation and Antimicrobial Resistance Phenotype of Salmonella Species from Ready-to Eat Roasted Meat (Suya) in Ilorin, Kwara State, Nigeria OO Oludairo, AK Balogun, OB Daodu, JO Aiyedun Journal of Applied Veterinary Sciences 7 (4), 67-73 , 2022 2022 Citations: 9
Occurrence, Antimicrobial Susceptibility and Biofilm Production in Listeria monocytogenes Isolated from Pork and other Meat Processing Items at Oko- Oba Abattoir, Lagos State … JO Aiyedun, OI Olatoye, OO Oludairo, AO Adesope, O Ogundijo Sahel Journal of Veterinary Sciences 17 (4), 24-30 , 2020 2020 Citations: 9
Surveillance for avian influenza virus in captive wild birds and indigenous chickens in Nigeria OB Daodu, HO Jegede, JO Aiyedun, OO Oludairo, ID Olorunshola, ... Tropical animal health and production 52 (5), 2387-2393 , 2020 2020 Citations: 9
Growth, antibacterial properties and haematological parameters of broiler chickens fed moringa and neem leaf meals as additives JO Aiyedun, MO Oladele-Bukola, IO Olatoye, OO Oludairo, GAT Ogundipe Nigerian Journal of Animal Science 22 (2), 126-139 , 2020 2020 Citations: 8