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Penrith ML, van Emmenes J, Hakizimana JN, Heath L, Kabuuka T, Misinzo G, Odoom T, Wade A, Zerbo HL, Luka PD. African Swine Fever Diagnosis in Africa: Challenges and Opportunities. Pathogens 2024; 13:296. [PMID: 38668251 PMCID: PMC11054189 DOI: 10.3390/pathogens13040296] [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: 02/07/2024] [Revised: 03/18/2024] [Accepted: 03/29/2024] [Indexed: 04/29/2024] Open
Abstract
The global spread of African swine fever (ASF) in recent decades has led to the need for technological advances in sampling and diagnostic techniques. The impetus for these has been the need to enable sampling by lay persons and to obtain at least a preliminary diagnosis in the field for early control measures to be put in place before final laboratory confirmation. In rural Africa, rapid diagnosis is hampered by challenges that include lack of infrastructure as well as human and financial resources. Lack of animal health personnel, access to affordable means to transport field samples to a laboratory, and lack of laboratories with the capacity to make the diagnosis result in severe under-reporting of ASF, especially in endemic areas. This review summarizes the challenges identified in gap analyses relevant to low- and middle-income countries, with a focus on Africa, and explore the opportunities provided by recent research to improve field diagnosis and quality of diagnostic samples used. Sampling techniques include invasive sampling techniques requiring trained personnel and non-invasive sampling requiring minimal training, sampling of decomposed carcass material, and preservation of samples in situations where cold chain maintenance cannot be guaranteed. Availability and efficacy of point-of-care (POC) tests for ASF has improved considerably in recent years and their application, as well as advantages and limitations, are discussed. The adequacy of existing laboratory diagnostic capacity is evaluated and opportunities for networking amongst reference and other laboratories offering diagnostic services are discussed. Maintaining laboratory diagnostic efficiency in the absence of samples during periods of quiescence is another issue that requires attention, and the role of improved laboratory networking is emphasized. Early diagnosis of ASF is key to managing the disease spread. Therefore, the establishment of the Africa Chapter of the Global African Swine Fever Research Alliance (GARA) increases opportunities for collaboration and networking among the veterinary diagnostic laboratories in the region.
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Affiliation(s)
- Mary-Louise Penrith
- Department of Veterinary Tropical Diseases, Faculty of Veterinary Science, University of Pretoria, Onderstepoort, Pretoria 0110, South Africa
| | - Juanita van Emmenes
- Transboundary Animal Diseases, Onderstepoort Veterinary Institute, Agricultural Research Council, Pretoria 0110, South Africa; (J.v.E.); (L.H.)
| | - Jean N. Hakizimana
- SACIDS Africa Centre of Excellence for Infectious Diseases, SACIDS Foundation for One Health, Sokoine University of Agriculture, Morogoro P.O. Box 3297, Tanzania; (J.N.H.); (G.M.)
| | - Livio Heath
- Transboundary Animal Diseases, Onderstepoort Veterinary Institute, Agricultural Research Council, Pretoria 0110, South Africa; (J.v.E.); (L.H.)
| | - Tonny Kabuuka
- National Livestock Resources Research Institute, National Agricultural Research Organization, Entebbe P.O. Box 295, Uganda;
| | - Gerald Misinzo
- SACIDS Africa Centre of Excellence for Infectious Diseases, SACIDS Foundation for One Health, Sokoine University of Agriculture, Morogoro P.O. Box 3297, Tanzania; (J.N.H.); (G.M.)
- Department of Veterinary Microbiology, Parasitology and Biotechnology, College of Veterinary Medicine and Biomedical Sciences, Sokoine University of Agriculture, Morogoro P.O. Box 3019, Tanzania
| | - Theophilus Odoom
- Veterinary Services Directorate, Accra Veterinary Laboratory, Accra P.O. Box M161, Ghana;
| | - Abel Wade
- National Veterinary Laboratory (LANAVET), Garoua P.O. Box 503, Cameroon;
| | - Habibata L. Zerbo
- Ministry of Agriculture, Animal and Fisheries Resources, Ouagadougou 03 BP 907, Burkina Faso;
| | - Pam D. Luka
- Biotechnology Centre, National Veterinary Research Institute, PMB 1, Vom 930103, Nigeria
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Point of care diagnostics and non-invasive sampling strategy: a review on major advances in veterinary diagnostics. ACTA VET BRNO 2022. [DOI: 10.2754/avb202291010017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
The use of point of care diagnostics (POCD) in animal diseases has steadily increased over the years since its introduction. Its potential application to diagnose infectious diseases in remote and resource limited settings have made it an ideal diagnostic in animal disease diagnosis and surveillance. The rapid increase in incidence of emerging infectious diseases requires urgent attention where POCD could be indispensable tools for immediate detection and early warning of a potential pathogen. The advantages of being rapid, easily affordable and the ability to diagnose an infectious disease on spot has driven an intense effort to refine and build on the existing technologies to generate advanced POCD with incremental improvements in analytical performance to diagnose a broad spectrum of animal diseases. The rural communities in developing countries are invariably affected by the burden of infectious animal diseases due to limited access to diagnostics and animal health personnel. Besides, the alarming trend of emerging and transboundary diseases with pathogen spill-overs at livestock-wildlife interfaces has been identified as a threat to the domestic population and wildlife conservation. Under such circumstances, POCD coupled with non-invasive sampling techniques could be successfully deployed at field level without the use of sophisticated laboratory infrastructures. This review illustrates the current and prospective POCD for existing and emerging animal diseases, the status of non-invasive sampling strategies for animal diseases, and the tremendous potential of POCD to uplift the status of global animal health care.
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Verma N, Kulkarni R, Pandya A. Microfluidic tools for veterinary and zoonotic disease diagnostics. PROGRESS IN MOLECULAR BIOLOGY AND TRANSLATIONAL SCIENCE 2022; 187:281-293. [PMID: 35094778 DOI: 10.1016/bs.pmbts.2021.07.026] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
Animal disease diagnostics has linked as the cause and cure of any disease. It also plays a vital role in disease management and prevention. A small outbreak of disease can pose a threat to the entire animal community as we realized in corona pandemic. Thus, to ensure the overall welfare of animals and disease spread monitoring, the development of detection tools for veterinary diagnosis becomes essential. Currently, the animal disease diagnosis is relied on laboratory-based testing. There is a parallel necessity for rapid, reliable and low-cost diagnostic tests to be done by intervention of growing area such as microfluidic platform. Therefore, in this chapter, we have discussed about various microfluidic platform and their application for early diagnosis of veterinary disease. Followed by, we also lightened on future perspective of role of microfluidic in animal disease diagnostics.
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Affiliation(s)
- Nidhi Verma
- Department of Engineering and Physical Sciences, Institute of Advanced Research, Gandhinagar, Gujarat, India
| | - Rutuparna Kulkarni
- Department of Biological Sciences and Biotechnology, Institute of Advanced Research, Gandhinagar, Gujarat, India
| | - Alok Pandya
- Department of Engineering and Physical Sciences, Institute of Advanced Research, Gandhinagar, Gujarat, India.
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Anklam E, Bahl MI, Ball R, Beger RD, Cohen J, Fitzpatrick S, Girard P, Halamoda-Kenzaoui B, Hinton D, Hirose A, Hoeveler A, Honma M, Hugas M, Ishida S, Kass GEN, Kojima H, Krefting I, Liachenko S, Liu Y, Masters S, Marx U, McCarthy T, Mercer T, Patri A, Pelaez C, Pirmohamed M, Platz S, Ribeiro AJS, Rodricks JV, Rusyn I, Salek RM, Schoonjans R, Silva P, Svendsen CN, Sumner S, Sung K, Tagle D, Tong L, Tong W, van den Eijnden-van-Raaij J, Vary N, Wang T, Waterton J, Wang M, Wen H, Wishart D, Yuan Y, Slikker Jr. W. Emerging technologies and their impact on regulatory science. Exp Biol Med (Maywood) 2022; 247:1-75. [PMID: 34783606 PMCID: PMC8749227 DOI: 10.1177/15353702211052280] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
There is an evolution and increasing need for the utilization of emerging cellular, molecular and in silico technologies and novel approaches for safety assessment of food, drugs, and personal care products. Convergence of these emerging technologies is also enabling rapid advances and approaches that may impact regulatory decisions and approvals. Although the development of emerging technologies may allow rapid advances in regulatory decision making, there is concern that these new technologies have not been thoroughly evaluated to determine if they are ready for regulatory application, singularly or in combinations. The magnitude of these combined technical advances may outpace the ability to assess fit for purpose and to allow routine application of these new methods for regulatory purposes. There is a need to develop strategies to evaluate the new technologies to determine which ones are ready for regulatory use. The opportunity to apply these potentially faster, more accurate, and cost-effective approaches remains an important goal to facilitate their incorporation into regulatory use. However, without a clear strategy to evaluate emerging technologies rapidly and appropriately, the value of these efforts may go unrecognized or may take longer. It is important for the regulatory science field to keep up with the research in these technically advanced areas and to understand the science behind these new approaches. The regulatory field must understand the critical quality attributes of these novel approaches and learn from each other's experience so that workforces can be trained to prepare for emerging global regulatory challenges. Moreover, it is essential that the regulatory community must work with the technology developers to harness collective capabilities towards developing a strategy for evaluation of these new and novel assessment tools.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | - Reza M Salek
- International Agency for Research on Cancer, France
| | | | | | | | | | | | | | - Li Tong
- Universities of Georgia Tech and Emory, USA
| | | | | | - Neil Vary
- Canadian Food Inspection Agency, Canada
| | - Tao Wang
- National Medical Products Administration, China
| | | | - May Wang
- Universities of Georgia Tech and Emory, USA
| | - Hairuo Wen
- National Institutes for Food and Drug Control, China
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Wang L, Madera R, Li Y, McVey DS, Drolet BS, Shi J. Recent Advances in the Diagnosis of Classical Swine Fever and Future Perspectives. Pathogens 2020; 9:pathogens9080658. [PMID: 32824178 PMCID: PMC7460108 DOI: 10.3390/pathogens9080658] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2020] [Revised: 08/09/2020] [Accepted: 08/13/2020] [Indexed: 11/16/2022] Open
Abstract
Classical swine fever (CSF) is a highly contagious viral disease of pigs, including wild boar. It is regarded as one of the major problems in the pig industry as it is still endemic in many regions of the world and has the potential to cause devastating epidemics, particularly in countries free of the disease. Rapid and reliable diagnosis is of utmost importance in the control of CSF. Since clinical presentations of CSF are highly variable and may be confused with other viral diseases in pigs, laboratory diagnosis is indispensable for an unambiguous diagnosis. On an international level, well-established diagnostic tests of CSF such as virus isolation, fluorescent antibody test (FAT), antigen capture antibody enzyme-linked immunosorbent assay (ELISA), reverse-transcription polymerase chain reaction (RT-PCR), virus neutralization test (VNT), and antibody ELISA have been described in detail in the OIE Terrestrial Manual. However, improved CSF diagnostic methods or alternatives based on modern technologies have been developed in recent years. This review thus presents recent advances in the diagnosis of CSF and future perspectives.
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Affiliation(s)
- Lihua Wang
- Department of Anatomy and Physiology, College of Veterinary Medicine, Kansas State University, Manhattan, KS 66506, USA; (R.M.); (Y.L.)
- Correspondence: (L.W.); (J.S.); Tel.: +1-785-532-4397 (L.W.); +1-785-532-4506 (J.S.)
| | - Rachel Madera
- Department of Anatomy and Physiology, College of Veterinary Medicine, Kansas State University, Manhattan, KS 66506, USA; (R.M.); (Y.L.)
| | - Yuzhen Li
- Department of Anatomy and Physiology, College of Veterinary Medicine, Kansas State University, Manhattan, KS 66506, USA; (R.M.); (Y.L.)
| | - David Scott McVey
- United States Department of Agriculture, Arthropod-Borne Animal Diseases Research Unit, Center for Grain and Animal Health Research, Manhattan, KS 66502, USA; (D.S.M.); (B.S.D.)
| | - Barbara S. Drolet
- United States Department of Agriculture, Arthropod-Borne Animal Diseases Research Unit, Center for Grain and Animal Health Research, Manhattan, KS 66502, USA; (D.S.M.); (B.S.D.)
| | - Jishu Shi
- Department of Anatomy and Physiology, College of Veterinary Medicine, Kansas State University, Manhattan, KS 66506, USA; (R.M.); (Y.L.)
- Correspondence: (L.W.); (J.S.); Tel.: +1-785-532-4397 (L.W.); +1-785-532-4506 (J.S.)
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