Epidemiology of Newcastle disease in Africa with emphasis on Côte d'Ivoire: A review

Amoia, Charlie F.; Nnadi, P.A.; Ezema, Chuka; Couacy‐Hymann, Emmanuel

doi:10.14202/vetworld.2021.1727-1740

Cited by 20 publications

(13 citation statements)

References 65 publications

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“…Our results indicated that ND was prevalent in the study area throughout the study period. Newcastle disease is reported to occur throughout the year in rural poultry populations in most countries, specifically, those in Africa [ 27 , 28 ], and the incidence of ND is associated with periods of climatic stress.…”

Section: Discussionmentioning

confidence: 99%

Seroprevalence and risk factors associated with Newcastle disease in backyard chickens in West Kordofan State, Sudan

et al. 2022

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Background and Aim: Newcastle disease (ND), a major constraint to poultry production worldwide, is a highly contagious disease of many species of domestic, exotic, and wild birds caused by ND virus (NDV). Epidemiological studies are lacking regarding ND in village chickens, including the traditional and intensive production systems used in Sudan. However, it is necessary to develop appropriate strategies to control the disease. Therefore, this study aimed to estimate the flock- and bird-level seroprevalence of NDV in backyard chickens in West Kordofan State, Sudan, and to identify the risk factors associated with ND in the study area. Materials and Methods: The seroprevalence of the circulating NDV and bird-level risk factors associated with ND was determined in backyard chickens from March to October 2017, in six villages (Alnowara, Alleait, Geibaish, Baiad, Sougoh, and Alnuhoud) in the Geibaish and Elnuhoud localities of West Kordofan State. Results: Using the hemagglutination-inhibition test, the bird- and flock-level seroprevalences of antibodies to NDV were estimated as 20.6% (78/378) and 45% (18/40), respectively. Bird-level NDV seropositivity in backyard chickens was significantly associated with the reason for raising chickens, type of housing, contact with neighboring poultry, contact with wild birds, and chicken mortality caused by infectious diseases (p ≤ 0.05). Conclusion: This study indicated that NDV is circulating in backyard chickens and may act as a potential source of infection for other birds and thus persistence of ND among local traditionally managed chickens in the areas of West Kordofan State. Risk factors contributing to ND occurrence are important for designing appropriate prevention and control strategies.

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Section: Discussionmentioning

confidence: 99%

Seroprevalence and risk factors associated with Newcastle disease in backyard chickens in West Kordofan State, Sudan

et al. 2022

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“…Poultry is quite vulnerable to the ND virus (NDV), and many outbreaks have been documented in poultry populations worldwide. These outbreaks lead to significant financial losses, amounting to millions of dollars annually [10]. NDV strains have been categorized into 3 pathotypes based on the noticeable symptoms in chickens: lentogenic, mesogenic, and velogenic.…”

Section: Molecular Identification Of the Common Viral Respiratory Vir...mentioning

confidence: 99%

Molecular identification of the common viral respiratory viruses in backyard chickens in Basrah, Southern Iraq

Al-Mubarak,

Najem,

Thwiny

2023

Korean J Vet Res

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Many viruses can infect different types of birds, with poultry being the most susceptible. These viral diseases have a direct negative impact on the poultry industry, with significant economic losses. This study examined a group of the most important viruses that infect backyard chickens in 2 specific areas of Basrah Governorate, south of Iraq. The study analyzed avian influenza viruses (AIVs), Newcastle disease virus (NDV), and infectious bronchitis virus (IBV). Two hundred and ninety oropharyngeal swabs, 150 from Abu Al-Khasib and 140 from Shatt Al-Arab regions in the Basrah governorate, were obtained from backyard chickens with clear respiratory signs. The samples were subjected to viral RNA extraction, and the viral nucleic acids were detected using an RT-PCR technique. The overall rate of viral infections was 74.8%, which varied depending on the type of virus: 15.8%, 31.3%, and 27.5% for AIV, NDV, and IBV, respectively. The NDV and IBV had much higher infection rates than that of AIV. In addition, the prevalence of AIV in the Shatt Al Arab district was significantly higher than in the Abul Khasib district. Moreover, there were no significant differences between the NDV and the IBV distributions in either of the targeted regions in this study.

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“…In Africa, the greater population of poultry is reared under traditional management practices (Amoia et al,2021). Several factors, such as weekly farm cleaning or never practicing (Chaka et al, 2013), age diversity production system (Jaganathan et al, 2015), Inadequate biosecurity and vaccination efforts (Messai and Salhi, 2019), access to visitors (Alsahami et al, 2018), contact with wild birds (Otim et al, 2007), are contributory factors on the occurrence of this disease.…”

Section: Introductionmentioning

confidence: 99%

Molecular detection, serology, and associated risk factors of newcastle disease in chicken at JUCAVM and seka chokorsa town veterinary clinics,Oromia region, southwestern Ethiopia

Tesfaye,

Deneke,

Mohammed

et al. 2023

Preprint

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Newcastle disease is a highly contagious and devastating viral disease of domestic and wild birds. A better knowledge of the disease and the ability to make evidence-based prevention and control methods are very substantial. Therefore the research was planned to determine the molecular and serological detection as well as associated risk factors of Newcastle disease in chickens at JUCAVM and Seka Chokorsa town veterinary clinics. A cross sectional study was conducted from April 2022 to September 2022 on clinically suspected chickens of Newcastle disease virus.Ninety Seven (97) tracheal swabs and 83 cloacal swabs, and from the same chicken 180 sera were also collected. Swabs and sera were tested using Reverse Transcription Polymerase Chain Reaction ( RTPCR) and competitive Enzyme Linked Immuno Sorbent Assay (cELISA) technique respectively. Of the 180 swab samples,14(7.8%) [95%CI=(4.69–12.63)%] of the chicken tested positive by RTPCR.It was performed using a specific primer corresponding to the Fusion (F) gene. The competitive Enzyme Linked Immuno Sorbent Assay (cELISA) result confirmed that 51(28.3%)[95% CI=(22.26–35.32%)]. Binary logistic regression analysis was used for the different risk factors. There was a statistically significant difference (p < 0.05) among risk factors of sex ([AOR = 2.1,95% CI(1.3–4.3)] and contact with other flocks[AOR = 7,95% CI(1.9–62)] in the RTPCR test.However,sex[AOR = 2.3,95% CI(1.1–4.8)],age ([AOR = 2.4,95%CI=(1.1-5.0)],contact with other flock[AOR = 2.3,95% CI(1.2–5.8)],contact with wild bird [AOR = 9.7,95% CI(1.2–81)],disposal chicken of carcass[AOR = 9,95% CI(1.1–73)],cleaning house[AOR = 1.3; 95% CI: (1.3–3.4)] and isolation of sick chicken [AOR = 6.5,95% CI(1.4–32)] showed statistically significant on cELISA test.The current study provides important information on the presence of the virus in the study areas. Hence further research should be conducted with a pathotyping of the Newcastle disease virus and awareness of owners on management should be practiced.

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Epidemiology of Newcastle disease in Africa with emphasis on Côte d'Ivoire: A review

Cited by 20 publications

References 65 publications

Seroprevalence and risk factors associated with Newcastle disease in backyard chickens in West Kordofan State, Sudan

Seroprevalence and risk factors associated with Newcastle disease in backyard chickens in West Kordofan State, Sudan

Molecular identification of the common viral respiratory viruses in backyard chickens in Basrah, Southern Iraq

Molecular detection, serology, and associated risk factors of newcastle disease in chicken at JUCAVM and seka chokorsa town veterinary clinics,Oromia region, southwestern Ethiopia

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