Prevalence and associated risk factors of Linguatula serrata infection in definitive and intermediate hosts in Iran and other countries: A systematic review (original) (raw)
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Iranian journal of parasitology
Human linguatulosis poses an important medical and veterinary concern in endemic countries. Animals, as reservoir host, play a major role in transmission of infestation and epidemiology of the disease. This study reports a case of human linguatulosis caused by Linguatula serrata in the city of Kerman, South-eastern Iran. A woman suffering from upper respiratory symptoms is presented. The patient consumed raw liver of sheep who was admitted to the Afzalipour University Hospital in Kerman for the symptoms of upper respiratory tract. In microscopic examination of the nasopharyngeal discharge, L. serrata was detected. This report has future medical implication in precise diagnosis of L. serrata in patients with complaints of nasopharyngeal symptoms.
Prevalence of Linguatula serrata Infection in Animals from the Cairo Abattoir
The Journal of Parasitology, 1976
Background: Linguatulosis is a rare zoonotic parasitic infection, in which human plays the role of both definitive and intermediate host and can be occasionally infected. This study determines the status of infection in livestock and its potential risk to men in the northwestern province of Azarbaijan-e-Sharghi, Iran. Methods: In a cross-sectional study from June 2007 to June 2008, 800 slaughtered animals including 400 cattle and 400 buffaloes from Tabriz abattoir in Azarbaijan-e-Sharghi Province were randomly selected and examined for L. serrata nymphs. After primary macroscopical inspection, all liver and lung samples were cut to small pieces, treated with a tissue digestion method and checked macroscopically and microscopically for free or encapsulated nymphs. Results: Out of 800 animals, 3 (0.38%) were found to be infected with L. serrata nymphs and the prevalence of infection in cattle and buffaloes was determined to be 0.25% and 0.5%, respectively. Conclusion: Linguatula infection occurs as an endemic zoonosis in the study area and has an active transmission life cycle.
Seroprevalence of Linguatula serrata infection among sheep in Fars province, south of Iran
2017
Linguatula serrata is an important zoonotic parasite at a global scale. The epidemiological role of sheep in transmission of linguatulosis has recently been demonstrated, but there is still a lack of information on the subject. The aim of the present study was to evaluate the occurrence and seroprevalence of L. serrata infection among sheep in Fars province, south of Iran, from December 2014 to September 2015. Blood samples were collected from 180 sheep in Shiraz abattoir. The antibody detection against L. serrata was made by counter immunoelectrophoresis (CIEP). Specific antibodies against L. serrata were detected in 84 (46.66%) out of 180 ovine sera. Out of 38 males, 21 under 1 year old (55.26 %) and out of 81 males, 36 older than 1 year (44.44%) were infected with nymphs. Fifteen out of 30 females under 1 year old (50%) and 12 out of 31 females above 1 year old (38.7%) were infected with nymphs. The age and the sex of infected sheep showed no significant differences between posit...
Veterinární medicína, 2011
Linguatula serrata is a zoonotic parasite causing visceral and nasopharyngeal linguatulosis in humans. Dog and other canines are the main definitive hosts while most herbivores, including ruminants serve as intermediate hosts for linguatulosis. Human rarely become infected as both final and intermediate hosts. This survey aimed to assess the L. serrata infection rate of dogs and domestic ruminants in North West of Iran. The upper respiratory tract of 97 dogs including 45 females and 52 males and the mesenteric lymph nodes (MLNs) of 396 goats (203 females and 193 males), 406 buffaloes (166 females and 240 males), 421 cattle (209 females and 212 males) and 438 sheep (223 females and 215 males) were examined for L. serrata. Animals were categorized into four age groups, including under six months, six to 24 months, two to four years and more than four years. Results showed that 27.83% of dogs were infected with L .serrata. The infection rate for goats, buffaloes, cattle and sheep was ...
Prevalence of Linguatula serrata in domestic ruminants in South India
The Southeast Asian journal of tropical medicine and public health, 2008
Linguatula serrata Frohlich, 1789 is an aberrant endoparasite of occasional zoonotic importance in humans. We report the prevalence of encapsulated nymphal stages of L. serrata in domestic ruminants surveyed in Wayanad, located in Kerala State, South India. Large and small intestine mesentery were examined from 100 goats, cattle and buffaloes each revealing an infection prevalence of 21, 19, and 8%, respectively. The prevalence of L. serrata infection among ruminants is higher than previous reports from India and indicates a strong focus of infection in herbivorous domesticated mammals of South India. The potential importance of these findings to human health is discussed.
Prevalence of Linguatula serrata Infection in Domestic Bovids Slaughtered in Tabriz Abattoir, Iran
Iranian Journal of Parasitology, 2009
Background: Linguatulosis is a rare zoonotic parasitic infection, in which human plays the role of both definitive and intermediate host and can be occasionally infected. This study determines the status of infection in livestock and its potential risk to men in the northwestern province of Azarbaijan-e-Sharghi, Iran. Methods: In a cross-sectional study from June 2007 to June 2008, 800 slaughtered animals including 400 cattle and 400 buffaloes from Tabriz abattoir in Azarbaijan-e-Sharghi Province were randomly selected and examined for L. serrata nymphs. After primary macroscopical inspection, all liver and lung samples were cut to small pieces, treated with a tissue digestion method and checked macroscopically and microscopically for free or encapsulated nymphs. Results: Out of 800 animals, 3 (0.38%) were found to be infected with L. serrata nymphs and the prevalence of infection in cattle and buffaloes was determined to be 0.25% and 0.5%, respectively. Conclusion: Linguatula infec...
Prevalence of Linguatula serrata in lymph nodes of small ruminants: case from Iran
Comparative Clinical Pathology, 2013
Linguatulosis is a zoonotic parasitic disease caused by Endoparasite that belongs to the arthropod class. This study surveys the status of infection in North of Iran and its potential risks for humans. In a crosssectional study during June 2010 to June 2011 on slaughtered livestock in Amol slaughterhouse including 107 goats, 100 sheep and 100 cattle from northern provinces were selected randomly and their mesenteric lymph nodes macroscopically and microscopically examined for Linguatula serrate nymph. Totally 110 animals out of 307 were infected with Linguatula serrate nymph and prevalence of rate in goat, sheep and cattle were 19(19%), 17(17%) and 74 (69.15%), respectively. Linguatulosis is an endemic infection in the most of Iran provinces and it has an active transmission. Therefore, more studies and attention of authorities are required regarding its prevention and control.
Some data of the morphology of Linguatula serrata Frölich, 1789 and clinical symptoms of disease
Experimental infection of a two-month-old dog was performed with 50 nymphs of Linguatula serrata collected from naturally infected hare. The dog showed clinical signs of the disease. Forty-five days after the oral infection 8 male and 6 female Linguatula serrata were found in the nasal conches. The morphology of some parasite's stages and the karyotype of the species as well was described and documented. The parasites 45 days after oral infection had a well developed gonad system and active reproductive function of the gonad cells. The diploid number of the chromosomes was 2n:20. Sex was determined by XX type in female and XY in male individuals.