Seroprevalence of canine heartworm disease (Dirofilaria immitis) on Tenerife Island: an epidemiological update

Montoya, J. A.; Morales, Manuel; Juste, M.C.; Bañares, A; Simón, F; Genchi, C.

doi:10.1007/s00436-006-0257-1

Cited by 25 publications

(19 citation statements)

References 5 publications

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“…Both sexes had similar prevalence (P>0.05) in agreement with several authors (Song et al, 2003;Montoya et al, 2006;Rapti and Rehbein, 2010), which is in contrast to other studies (Yldrim et al, 2007;Traversa et al, 2010), where significantly higher prevalence rates in males were shown. It has been suggested that the higher infection rate in male dogs could be due to them attracting vectors more strongly (Montoya et al, 1998).…”

Section: Discussionsupporting

confidence: 91%

Geographic distribution of canine heartworm (Dirofilaria immitis) infection in stray dogs of eastern Romania

et al. 2016

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A survey was conducted in the eastern part of Romania to assess the prevalence and geographical distribution of Dirofilaria immitis in dogs. Plasma samples were collected from 458 stray dogs hosted in shelters in 8 counties and tested serologically for the presence of heartworm. In addition, 45 blood samples from dogs of a shelter in Galati city were examined by the modified Knott and multiplex polymerase chain reaction (PCR) techniques. The immmunological assay showed a heartworm infection prevalence of 8.9% in the dogs. Optical density results for positive samples ranged between 0.217 and 2.683. Geographical information systems (GIS) were used to produce overlays of distribution maps of D. immitis prevalence and predictive maps based on temperature suitability. High prevalence of D. immitis was found in the central East up to the northern border of the country, i.e.Galati county (60%), followed by the counties of Vaslui (12.0%) and Iasi (7.7%). Out of 45 samples examined using the Knott test, 23 were positive for circulating microfilariae (51.1%), while 19 dogs were positive for D. immitis and 4 for both D. immitis and D. repens with the multiplex PCR test. The high prevalence for D. immitis shown in dogs in the Southeast (Galati, 42.2%) also by multiplex PCR gave strong support to the results achieved by the serological tests. The present study confirms the ability of GIS to predict the distribution and epidemiology of dirofilariosis in different geographical territories as has been already demonstrated by the empirical epidemiological data obtained at the continental, national and intraregional levels.

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Section: Discussionsupporting

confidence: 91%

Geographic distribution of canine heartworm (Dirofilaria immitis) infection in stray dogs of eastern Romania

et al. 2016

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“…The infection was more prevalent in old dog than that of younger one because of long exposure period in endemic areas (16,18). In present study, the highest (53.3%) seroprevalence was in the ≥7 year-old age group followed by 20.5 % in the 4-6 year-old age group and 17 % in the 0.6-3 year-old age group.…”

Section: Resultsmentioning

confidence: 99%

The prevalence of Dirofilaria immitis in dogs with different breed, ages and sex

Adanir¹,

Sezer²,

Köse³

2013

Ankara Üniversitesi Veteriner Fakültesi Dergisi

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Summary:This study was performed to investigate the prevalence of Dirofilaria immitis in stray dogs with different ages, sexes and breeds. A total of 142 dogs were examined in this study. Blood samples were examined with nativ, modified Knott's and antigen ELISA techniques. Of the total of 142 dogs, 31 were positive for D. immitis with a prevalance value of 22%. In addition 35.5% of positive dogs determine to have occult D. immitis infections. The highest prevalance of D. immitis infections were observed in ≥7 age group (%53,3), and this prevalance was followed by 4-6 (%20,5) and 0.6-3 age group (%17). The difference between ≥7 age group and other age groups (0.6-3 and 4-6 age groups) were found significant (P<0.05), whereas no statistically difference was observed between 0.6-3 and 4-6 age groups (P>0.05). Our results suggest that heartworm treatment and prophylaxis should be considered in Burdur region.Key words: Age, breed, Dirofilaria immitis, dog, prevalence, sex. Dirofilaria immitis enfeksiyonunun yayılışına yaşın etkisi incelendiğinde enfeksiyonunun en yüksek ≥7 yaş grubunda (%53,3) görüldüğü, bunu % 20,5 ile 4-6 yaş gurubu ve % 17 ile 0,6-3 yaş grubunun izlediği belirlenmiştir. Yaş gruplarından ≥7 yaş grubu ile 0.6-3 ve 4-6 yaş grupları arasındaki farklılık önemli bulunurken (P<0.01), 0.6-3 yaş grubu ile 4-6 yaş grubu arasındaki farklılık önemsiz bulunmuştur (P>0.05). Bu çalışmanın sonuçlarına göre, Burdur yöresinde Dirofilaria immitis enfeksiyonlarına karşı gerekli kontrol ve mücadele tedbirlerinin ortaya konması gerekmektedir.

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“…Thus, the identification of the mosquito vector species involved in the transmission in such endemic area is a key feature to a correct understanding of the transmission dynamics in both animal reservoirs and human hosts. Tenerife and Gran Canaria (Canary Islands) have been reported as hyperendemic áreas for dirofilariosis with high canine prevalences [16,17]. Moreover the risks for humans have been demonstrated by the detection of specific anti-D. immitis antibodies in resident of the both islands [42,17].…”

Section: Discussionmentioning

confidence: 99%

“…The climate of Canary Islands is very different from those of the European continent. A significant change in climate, vegetation, and mountain geography can be observed by travelling only a few kilometers in both islands [16,17] being Gran Canaria a drier climate than Tenerife. The captures were carried out in 4 places on Tenerife (San Cristóbal de La Laguna, San Andrés, Güímar, Guía de Isora and Granadilla) and 3 places on Gran Canaria (Jardín Botánico, Veneguera and Juncalillo).…”

Section: Study Areamentioning

confidence: 99%

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Molecular Characterization of Culex Theileri from Canary Islands, Spain, a Potential Vector of Dirofilaria Immitis

Bargues¹

2013

J Clin Exp Pathol

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Dirofilaria immitis is the causal agent of heartworm diseases and of human pulmonary dirofilariosis. The infection is transmitted by several species of culicid mosquitoes that are frequently able to bite both animal reservoirs and humans. Canary Islands (Spain) constitute a well documented endemic area of canine dirofilariosis in which the mosquito species involved in the transmission of D. immitis are not known. The objectives of the present work were the identification of vectors of this parasite in Canary Islands and their molecular characterization. A total of 1219 female mosquitoes were captured. The most abundant species was Culex theileri (52.26%) followed by Cx. pipiens (35.44%), Anopheles cinereus hispaniola (6.23%), Culiseta longiareolata (5.74%), and Culex laticintus (0.33%). PCR was applied for the detection of larval D. immitis DNA in mosquitoes. D. immitis DNA was observed in the abdomen of one Cx. theileri female: 0.082% of the entire mosquito population and 0.17% in Cx. theileri. A molecular identification of Cx. theileri, the potential mosquito vector of dirofilariosis in this zoonotic focus in Canary Islands of Spain, has been made for first time based on sequences of the 18S rRNA gene, the second internal transcribed spacer (ITS2) of ribosomal DNA and the barcode region of the cytochrome c oxidase I (cox1) gene of mitochondrial DNA, allowing a broad mosquito molecular basis for future populations genetic analyses of this vector species. Parasitological and entomological molecular results suggest that Cx. theileri is a potential natural vector of D. immitis in Canary Islands.

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Seroprevalence of canine heartworm disease (Dirofilaria immitis) on Tenerife Island: an epidemiological update

Cited by 25 publications

References 5 publications

Geographic distribution of canine heartworm (Dirofilaria immitis) infection in stray dogs of eastern Romania

Geographic distribution of canine heartworm (Dirofilaria immitis) infection in stray dogs of eastern Romania

The prevalence of Dirofilaria immitis in dogs with different breed, ages and sex

Molecular Characterization of Culex Theileri from Canary Islands, Spain, a Potential Vector of Dirofilaria Immitis

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