Epidemiology of Ostertagia ostertagi in warm temperate regions of the United States

Williams, Justin; Knox, J.W.

doi:10.1016/0304-4017(88)90058-1

Cited by 10 publications

(3 citation statements)

References 25 publications

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“…O. ostertagi is a cosmopolitan parasite of cattle. It is found with a lesser extent in sheep, goats, wild ruminants and horses [1,40]. It was also reported occasionally in humans from Iran and Azerbaidjan [3].…”

Section: Discussionmentioning

confidence: 99%

Zoonotic transmission of Teladorsagia circumcincta and Trichostrongylus species in Guilan province, northern Iran: molecular and morphological characterizations

et al. 2020

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Background: Parasitic trichostrongyloid nematodes have a worldwide distribution in ruminants and frequently have been reported from humans in Middle and Far East, particularly in rural communities with poor personal hygiene and close cohabitation with herbivorous animals. Different species of the genus Trichostrongylus are the most common trichostrongyloids in humans in endemic areas. Also, Ostertagia species are gastrointestinal nematodes that mainly infect cattle, sheep and goats and in rare occasion humans. The aim of the present study was to identify the trichostrongyloid nematodes obtained from a familial infection in Guilan province, northern Iran, using morphological and molecular criteria. Methods: After anthelmintic treatment, all fecal materials of the patients were collected up to 48 h and male adult worms were isolated. Morphological identification of the adult worms was performed using valid nematode keys. Genomic DNA was extracted from one male worm of each species. PCR amplification of ITS2-rDNA region was carried out, and products were sequenced. Phylogenetic analysis of the nucleotide sequence data was performed using MEGA 6.0 software. Results: Adult worms expelled from the patients were identified as T. colubriformis, T. vitrinus and Teladorsagia circumcincta based on morphological characteristics of the males. Phylogenetic analysis illustrated that each species obtained in current study was placed together with reference sequences submitted to GenBank database. Conclusions: The finding of current study confirms the zoonotic aspect of Trichostrongylus species and T. circumcincta in inhabitants of Guilan province. The occurrence of natural human infection by T. circumcincta is reported for the first time in Iran and the second time in the world.

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Section: Discussionmentioning

confidence: 99%

Zoonotic transmission of Teladorsagia circumcincta and Trichostrongylus species in Guilan province, northern Iran: molecular and morphological characterizations

et al. 2020

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“…26 Louisiana workers have observed type II outbreaks almost exclusively after unusually hot and dry summers. 28 The clinical signs are identical to type I disease in severely affected cattle and may vary in severity depending upon the magnitude of the eruptions. If emergence of parasites from abomasal glands is gradual, a protracted disease occurs; if a massive maturation occurs, the clinical signs are severe, rapid, and usually catastrophic.…”

Section: Clinical Disease Erations Includementioning

confidence: 95%

“…Larval arrest, inhibition, or hypobiosis is evidently triggered by harsh climatic conditions of either cold (northern) or hot and dry (southern) regions. 28 The period of hypobiosis may last 4-7 months.…”

Section: Clinical Disease Erations Includementioning

confidence: 99%

Ostertagiasis in Cattle

Myers¹,

Taylor²

1989

J VET Diagn Invest

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A Review of the Epidemiology and Control of Gastrointestinal Nematode Infections of Small Ruminants

Tariq¹

2014

Proc. Natl. Acad. Sci., India, Sect. B Biol. Sci.

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Epidemiology of Ostertagia ostertagi in warm temperate regions of the United States

Cited by 10 publications

References 25 publications

Zoonotic transmission of Teladorsagia circumcincta and Trichostrongylus species in Guilan province, northern Iran: molecular and morphological characterizations

Zoonotic transmission of Teladorsagia circumcincta and Trichostrongylus species in Guilan province, northern Iran: molecular and morphological characterizations

Ostertagiasis in Cattle

A Review of the Epidemiology and Control of Gastrointestinal Nematode Infections of Small Ruminants

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