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Background: Dirofilaria immitis and D. repens are mosquito-borne filaroids that primarily infect dogs but also cats. Diagnosing feline dirofilariosis is challenging because of the low parasitic burdens and transient or absent microfilaremia.

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Filarial disease in the Brazilian Amazon and emerging opportunities for treatment and control.

Curr Res Parasitol Vector Borne Dis

December 2023

Instituto Leônidas e Maria Deane, Fundação Oswaldo Cruz Amazônia, Laboratório de Ecologia de Doenças Transmissíveis na Amazônia, Manaus, Amazonas, Brazil.

Following the successful eradication of , there are now just three species of conventional microfilaremic human filarial parasites endemic to the Brazilian Amazon region: , and The zoonotic filarial parasite is also found in the Amazon region as are several sylvatic filarial parasites, some of which have been recorded causing zoonoses and some of which have never been recorded outside the region. is only found in the Amazonia onchocerciasis focus in the Brazilian state of Roraima where it affects the people of the Yanomami tribe living around the densely forested Venezuela border region. is by far the most common filarial parasite in Brazil and has a broad but patchy distribution throughout the western Amazon region.

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Association between vector-borne pathogen seroprevalence in shelter-housed and owned dog populations in the contiguous United States of America.

Parasit Vectors

November 2023

Southeastern Cooperative Wildlife Disease Study, Department of Population Health, College of Veterinary Medicine, University of Georgia, Athens, Georgia, 30602, USA.

Article Synopsis
  • Domestic dogs are at risk of various vector-borne pathogens that can affect both their health and humans, making screenings in the USA important but potentially underestimating prevalence, especially in unvaccinated dogs.
  • The study aimed to compare data from shelter dogs and owned dogs to understand actual pathogen prevalence, focusing on diseases like heartworm and ehrlichiosis.
  • Results showed that shelter-housed dogs generally had a higher prevalence of infections compared to owned dogs, indicating that reliance on data from owned populations may lead to underestimation of health risks in unvaccinated shelter populations.
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Introduction: This article comprehensively explores Dirofilariasis, focusing on Dirofilaria repens and Dirofilaria immitis as rare zoonotic ailments. Emphasis is placed on their prevalence, life cycle intricacies, and symptoms, particularly the rising incidence of Dirofilaria repens in Europe, notably Lithuania. The report details three cases of oral dirofilariasis, presenting clinical histories, diagnostics, interventions, and species identification.

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Zoonotic Dirofilaria immitis and Dirofilaria repens infection in humans and an integrative approach to the diagnosis.

Acta Trop

November 2021

Department of Veterinary Medicine, University of Bari, Valenzano, Italy; Faculty of Veterinary Sciences, Bu-Ali Sina University, Hamedan, Iran. Electronic address:

Dirofilariosis by Dirofilaria immitis and Dirofilaria repens is endemic in dogs from countries of the Mediterranean basin. Both species may infect humans, with most of the infected patients remaining asymptomatic. Based on the recent description of the southernmost hyperendemic European focus of heartworm disease in dogs from the Pelagie archipelagos, we performed a serological and molecular survey in human population of that area.

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