Molecular detection of Toxoplasma gondii from aborted fetuses of sheep, goats and cattle in Bangladesh

Sah, Ramesh P.; Dey, Anita Rani; Rahman, Akm Anisur; Alam, Mohammad Zahangir; Talukder, Hasanuzzaman

doi:10.1016/j.vprsr.2019.100347

Cited by 12 publications

(11 citation statements)

References 39 publications

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“…In the present study, endogenous transplacental transmission of T. gondii was scarcely detected (9.52%) coinciding with the findings of other authors from other countries suggesting that this transmission route may not be important for this pathogen ( Buxton et al, 2007 ; Dubey, 2009 ; Innes et al., 2009 ) compared with the frequently detected endogenous transplacental transmission of N. caninum in cattle ( Trees & Williams, 2005 ; Lindsay & Dubey, 2020 ) and sheep ( Jolley et al, 1999 ; González-Warleta et al, 2018 ). Additionally, T. gondii could only be confirmed as the cause of two perinatal deaths but not in aborted foetuses, being less frequent than previously reported in the literature ( Hughes et al., 2005 ; Dubey, 2009 ; Moraes et al, 2011 ; Moreno et al, 2012 ; Sah et al, 2019 ).…”

Section: Discussionmentioning

confidence: 59%

Neospora caninum and Toxoplasma gondii as causes of reproductive losses in commercial sheep flocks from Argentina

Rosa

Fiorentino

Morrell

et al. 2021

Current Research in Parasitology & Vector-Borne Diseases

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Section: Discussionmentioning

confidence: 59%

Neospora caninum and Toxoplasma gondii as causes of reproductive losses in commercial sheep flocks from Argentina

Rosa

Fiorentino

Morrell

et al. 2021

Current Research in Parasitology & Vector-Borne Diseases

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“…Toxoplasmosis is caused by Toxoplasma gondii, a common protozoan parasite that may infect all warm-blooded animals in developed countries; however, felids, such as domestic cats, are the only known definitive hosts. Previously, toxoplasmosis was reported at 15.52% in goats' aborted fetuses in Bangladesh [56]. In North India, a similar prevalence was found in goats' cardiac and skeletal muscles [57].…”

Section: Discussionmentioning

confidence: 62%

“…To confirm T. gondii, PCR was used to amplify fragments of the B1 gene (512 bp) of T. gondii and was found positive in two goats. The B1 gene was selected because of its frequent use in detecting T. gondii as reported by other researchers [56,60].…”

Section: Discussionmentioning

confidence: 99%

Pathological study and molecular detection of zoonotic diseases in small ruminants at slaughter houses in Mymensingh, Bangladesh

et al. 2022

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Background and Aim: Slaughterhouses act as a significant public health hotspot in developing countries like Bangladesh. The study aimed to investigate small ruminants at slaughterhouses for pathological study and molecular detection of important zoonotic diseases. Materials and Methods: A total of 75 goats and 14 sheep were investigated from June 2019 to January 2020 at different slaughterhouses in Mymensingh division, Bangladesh. The targeted diseases were tuberculosis (TB), listeriosis, Q fever, brucellosis, anthrax, toxoplasmosis, hydatidosis, and linguatulosis. The tentative diagnosis was made based on gross and histopathological lesions. Polymerase chain reaction (PCR) was performed to confirm the causal agents of zoonotic diseases using disease-specific primers. Results: Grossly, caseous nodule formation in the visceral organs; enlarged and calcifications of mesenteric lymph nodes (MLNs); hydatid cyst formation in the liver were the predominant lesions observed. Histopathologically, granuloma, caseous necrosis, and calcifications admixed with acid-fast bacteria in the MLNs, liver, spleen, and kidney were seen as suggestive of infectivity due to TB. Septic lymphadenitis mixed with rod-shaped bacteria, doughnut granuloma, fibroplasia accompanied by eosinophils and lymphocytic infiltration in MLNs, and portal granuloma were observed in listeriosis, Q fever, linguatulosis, and toxoplasmosis suspected cases, respectively. The PCR amplified Mycobacterium tuberculosis complex (372 bp), Mycobacterium bovis (600 bp), Listeria monocytogenes (517 bp), Toxoplasma gondii (512 bp), and Coxiella burnetii (687 bp) species-specific amplicons. In addition, linguatulosis and hydatidosis were identified in six and three goats, respectively. Brucellosis and anthrax were not detected in any cases. The slaughterhouse samples were also found to harbor the coexistence of different zoonotic pathogens. Conclusion: Deadly infectious zoonotic diseases in goats and sheep at slaughterhouses may cause widespread public health risks. As a result, more intensive monitoring and epidemiological surveys are required to successfully prevent and control zoonotic diseases.

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“…In sheep, goats and pigs, it causes mainly stillbirth (Aguirre et al., 2019). Few studies reported seroprevalence of Toxoplasma gondii in human (15%–39%) and animals (8%–70%) in Bangladesh (Naheen et al., 2018; Rahman, Rahman, et al., 2018; Sah et al., 2019; Samad et al., 1993). A study detected Toxoplasma gondii in 10% of rodents (Krijger et al., 2019).…”

Section: Resultsmentioning

confidence: 99%

Major zoonotic diseases of public health importance in Bangladesh

Chowdhury

Aleem

Khan

et al. 2021

Veterinary Medicine & Sci

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Zoonotic diseases cause repeated outbreaks in humans globally. The majority of emerging infections in humans are zoonotic. COVID‐19 is an ideal example of a recently identified emerging zoonotic disease, causing a global pandemic. Anthropogenic factors such as modernisation of agriculture and livestock farming, wildlife hunting, the destruction of wild animal habitats, mixing wild and domestic animals, wildlife trading, changing food habits and urbanisation could drive the emergence of zoonotic diseases in humans. Since 2001, Bangladesh has been reporting many emerging zoonotic disease outbreaks such as nipah, highly pathogenic avian influenza, pandemic H1N1, and COVID‐19. There are many other potential zoonotic pathogens such as Ebola, Middle East respiratory syndrome coronavirus, Kyasanur forest disease virus and Crimean–Congo haemorrhagic fever that may emerge in the future. However, we have a limited understanding of zoonotic diseases’ overall risk in humans and associated factors that drive the emergence of zoonotic pathogens. This narrative review summarised the major emerging, re‐emerging, neglected and other potential zoonotic diseases in Bangladesh and their associated risk factors. Nipah virus and Bacillus anthracis caused repeated outbreaks in humans. More than 300 human cases with Nipah virus infection were reported since the first outbreak in 2001. The highly pathogenic avian influenza virus (H5N1) caused more than 550 outbreaks in poultry, and eight human cases were reported so far since 2007. People of Bangladesh are frequently exposed to zoonotic pathogens due to close interaction with domestic and peri‐domestic animals. The rapidly changing intensified animal–human–ecosystem interfaces and risky practices increase the risk of zoonotic disease transmission. The narrative review's findings are useful to draw attention to the risk and emergence of zoonotic diseases to public health policymakers in Bangladesh and the application of one‐health approach to address this public health threat.

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Molecular detection of Toxoplasma gondii from aborted fetuses of sheep, goats and cattle in Bangladesh

Cited by 12 publications

References 39 publications

Neospora caninum and Toxoplasma gondii as causes of reproductive losses in commercial sheep flocks from Argentina

Neospora caninum and Toxoplasma gondii as causes of reproductive losses in commercial sheep flocks from Argentina

Pathological study and molecular detection of zoonotic diseases in small ruminants at slaughter houses in Mymensingh, Bangladesh

Major zoonotic diseases of public health importance in Bangladesh

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