Department of Pathology, Parasitology and Microbiology, College of Veterinary Medicine, Sudan University of Science and Technology (SUST), Khartoum-North.
Onderstepoort J Vet Res. 2020 Dec 17;87(1):e1-e6. doi: 10.4102/ojvr.v87i1.1892.
The study aimed to investigate the presence of peste des petits ruminants (PPR) in pneumonic lung tissues from clinically apparently healthy sheep and goats and further demonstrating its prevalence in Gezira state, central Sudan. During March 2019, 99 pneumonic lung samples were collected from apparently healthy sheep (80) and goats (19) from Al-Hasaheisa slaughterhouse located in Al-Hasaheisa locality, Gezira state. Using the haemagglutination (HA) test for the detection of peste des petits ruminants virus (PPRV) antigen, an overall antigenic prevalence of 86.9% was demonstrated in sheep and goats lung tissue homogenate. Of note, the prevalence of PPRV is higher in goats (100%) compared to sheep (83.7%). In this study, the reported increasing prevalence of PPR in central Sudan might be because of insufficient vaccination of animals. The findings of the present study indicated the widespread of PPR amongst sheep and goats in Al-Hasaheisa, Gezira state. Detection of PPRV antigen in the pneumonic lung samples is an indication of exposure of these animals to PPRV or presence of PPR viral infection and demonstrates the role of PPR as the cause of pneumonia in small ruminants. In fact, the circulation of the virus in clinically apparently healthy animals poses a threat for other in-contact susceptible animals and could play a significant role in the spread of the disease.
本研究旨在调查在苏丹中部杰济拉州临床明显健康的绵羊和山羊的肺炎性肺组织中是否存在小反刍兽疫(PPR),并进一步证明其流行情况。2019 年 3 月,从位于杰济拉州 Al-Hasaheisa 地区的 Al-Hasaheisa 屠宰场收集了 99 份来自临床明显健康的绵羊(80 只)和山羊(19 只)的肺炎性肺样本。使用血凝(HA)试验检测小反刍兽疫病毒(PPRV)抗原,结果显示绵羊和山羊肺组织匀浆的总抗原流行率为 86.9%。值得注意的是,与绵羊(83.7%)相比,山羊的 PPRV 流行率更高(100%)。在本研究中,报告称在苏丹中部 PPR 的流行率增加,可能是因为动物接种疫苗不足。本研究的结果表明,在杰济拉州的 Al-Hasaheisa 地区,绵羊和山羊中广泛存在 PPR。在肺炎性肺样本中检测到 PPRV 抗原表明这些动物接触过 PPRV 或存在 PPR 病毒感染,这表明 PPR 是小反刍动物肺炎的原因。事实上,病毒在临床明显健康动物中的循环对其他接触易感动物构成威胁,并可能在疾病传播中发挥重要作用。