Prevalence of hydatidosis and fertility of hydatid cyst in slaughtered camels in Maiduguri, Nigeria

Igwenagu, Ephraim; Onyiche, E.T.; Saidu, A.M.; Chahari, A.M.; Waziri, Aliyu Dahiru; Kayeri, Babagana Kachalla

doi:10.4314/ijs.v20i2.10

Cited by 6 publications

(7 citation statements)

References 8 publications

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“…Previous studies have reported similar results implicating camels as most susceptible. In some areas, prevalence has been found to reach as high as 70% in camels and 40% in other livestock [18, 35, 36], although lower prevalence has also been documented in other locations [37, 38]. The high fertility rate observed in camels suggests that they play a significant epidemiological role in the transmission of CE in Nigeria, especially in the North-West and North-East zones.…”

Section: Discussionmentioning

confidence: 99%

Cystic echinococcosis in Nigeria: first insight into the genotypes of Echinococcus granulosus in animals

Ohiolei

Yan

et al. 2019

Parasites Vectors

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Background Cystic echinococcosis (CE) is a zoonosis caused by cestodes of Echinococcus granulosus ( sensu lato ) complex. In Nigeria, reports on the prevalence of CE, although limited, have been found to vary with location and host with higher prevalence and fertility rate observed in camels than other livestock. Until now, information regarding the molecular characteristics, genetic population structure, and genotypes of Echinococcus is lacking. Therefore, this study was aimed at addressing these gaps in knowledge. Methods We describe the genetic status of 31 Echinococcus isolates collected from slaughtered livestock (camels, cattle and goats) based on the full-length mitochondrial cytochrome c oxidase subunit 1 ( cox 1) and NADH dehydrogenase subunit 1 ( nad 1) genes. Results The resulting nucleotide sequences via the NCBI BLAST algorithm and Bayesian phylogeny of cox 1 and cox 1 –nad 1 genes using MrBayes v.3.1.2 showed that all isolates were clearly E. canadensis (G6/G7) and were 99–100% identical to previously reported G6/G7 haplotypes across Europe, Asia, North and East Africa. Conclusions Although, the G1 genotype is believed to be responsible for the majority of global CE burden, reports from a number of West African countries including Nigeria suggest that E. canadensis G6/G7 genotype could be the major causative agent of CE in the subregion. This study provides for the first time insight into the genetic population structure of Echinococcus species as well as implications for CE control in Nigeria. Electronic supplementary material The online version of this article (10.1186/s13071-019-3644-z) contains supplementary material, which is available to authorized users.

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Section: Discussionmentioning

confidence: 99%

Cystic echinococcosis in Nigeria: first insight into the genotypes of Echinococcus granulosus in animals

Ohiolei

Yan

et al. 2019

Parasites Vectors

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“…In the North, between 55.5 and 70.9% have been reported in some states during the 1970-1980s [25,29], while recent surveys within the last decade put CE prevalence between 8.97 and 59.3% in camels being higher than other concurrently examined livestock [48,49,58,59]. In few northern states, infection in camels could be very low as reported in Maiduguri, Borno state where a prevalence of 1.73% (mainly fertile cysts) was found among 404 camels examined postmortem [42]. To date, this variation in infection rates among livestock across the country specifically in states where surveys have been conducted (Fig.…”

Section: Prevalence In Animalsmentioning

confidence: 96%

“…For example, camels are often slaughtered after 8-10 years of age, leading to increased exposure and subsequent risk of acquiring the infection [59]. Recently, differences in ambient temperatures across the country were suggested as a possible factor that could cause prevalence to vary as some states experience temperatures as high as 45 °C resulting in desiccation of eggs [42]. Furthermore, since no study has been dedicated to identifying local factors responsible for human and livestock CE in Nigeria, the need for such studies to identify local transmission patterns cannot be overstated.…”

Section: Risk Factorsmentioning

confidence: 99%

Review of Cystic Echinococcosis in Nigeria: A Story of Neglect

Ohiolei¹,

Yan²,

Li³

et al. 2019

Acta Parasit.

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Purpose Cystic echinococcosis (CE) caused by Echinococcus granulosus sensu lato is a widespread zoonotic disease of global concern. In Nigeria, the exact picture/status of CE is unclear, as most of the states are largely uninvestigated. Yet, as with every parasitic zoonosis, the first step towards planning a comprehensive management and control programme involves assessment of available national/regional prevalence data, host range, and risk factors at play in the transmission dynamics. Methods Published articles on echinococcosis were searched on PubMed and Africa Journal Online (AJOL) databases. Inclusion criteria were based on studies reporting prevalence of echinococcosis in animals and humans (including case reports) from 1970 to 2018. Results In this study, we evaluated and summarized cystic echinococcosis reports in Nigeria and found that post 1970-80s, studies on cystic echinococcosis have remained sparse regardless of the high prevalence recorded in the early years of CE investigation. In addition, information on the genetic population structure and the role of wildlife in CE transmission is still lacking. Conclusions This study appraises the prevalence and distribution of CE in Nigeria and identified areas where surveillance and control efforts should be focused and intensified.

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“…Hydatid cysts are usually identified during the slaughter of domestic animals at slaughterhouses. However, serological methods have been used to diagnose hydatidosis in domestic animals (Dada and Belino, 1978;Dada et al, 1981;Haroun et al, 2008;Sazmand et al, 2013;Igwenagu et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

“…The most reliable diagnostic technique is cyst detection during meat inspection or at post-mortem examination via visualization and palpation for dead animals. However, with regard to the living animals, serology and ultrasonography are the diagnostic methods of choice (Dada and Belino, 1978;Igwenagu et al, 2018). Therefore, serological methods are highly valuable and useful for monitoring and controlling hydatid disease in camels.…”

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confidence: 99%

The global status and genetic characterization of hydatidosis in camels (Camelus dromedarius): a systematic literature review with meta-analysis based on published papers

et al. 2020

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Hydatidosis is a potential zoonotic helminthic disease affecting a broad spectrum of mammals, including humans, worldwide. The current review was conducted to investigate the genotypic status and prevalence of hydatid disease in camels across the world. For the purpose of the study, the articles addressing the worldwide prevalence of hydatidosis in camels were searched in several English language databases. The search process resulted in the inclusion of 122 papers. Based on the data presented in the reviewed articles, the pooled prevalence of hydatid disease in camels across the world was measured at 23.75% (95% CI 20.15–27.55). Moreover, the subgroup analysis demonstrated significant differences in the overall prevalence of hydatidosis among camels based on year, geographic area, climate parameters, camel population, gender, infected organ, fertility rate of the cyst and laboratory diagnostic technique. Furthermore, the Echinococcus granulosus genotypes identified in camels with hydatidosis included G1, G2, G3, G1–G3, G5, G6, G7, G6–G7 and G6–G10, with G6 being the most common genotype throughout the world. The data obtained from the current study are central to the better conceptualization of the biological and epidemiological characteristics of E. granulosus s.l. genotypes around the world, which can be helpful in the planning and adoption of more comprehensive control strategies.

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Prevalence of hydatidosis and fertility of hydatid cyst in slaughtered camels in Maiduguri, Nigeria

Cited by 6 publications

References 8 publications

Cystic echinococcosis in Nigeria: first insight into the genotypes of Echinococcus granulosus in animals

Cystic echinococcosis in Nigeria: first insight into the genotypes of Echinococcus granulosus in animals

Review of Cystic Echinococcosis in Nigeria: A Story of Neglect

The global status and genetic characterization of hydatidosis in camels (Camelus dromedarius): a systematic literature review with meta-analysis based on published papers

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