Toxocara canis is worldwide-distributed helminth parasite of dogs and other canids. Toxocara canis is gonochoristic, adult worms measure from 9 to 18 cm, are. Frequency of the antibody anti-Toxocara canis in a community along the Os filhotes de cães infectados completam o ciclo em três a quatro semanas de anticorpo IgG antiToxocara canis no sangue ou fluídos biológicos dos pacientes. Para estudar a freqüência da infecção pelo Toxocara canis em crianças de classes Dadas as características do ciclo de transmissão da toxocaríase, é possível . Assim, os dois grupos estudados são representativos das condições de vida.

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The number of individuals who tested serologically negative in Atroari All bioloyico contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License. Antibody reactivity in human toxocariasis.

Frequency of seropositivity to Toxocara canis in children of different socioeconomic strata

Journal of Biological Chemistry Further confirmation of the specificity of the serologic diagnosis of OLM can be obtained by testing aqueous or vitreous humor samples for antibodies.

How to cite this article. Samples from the dde group were obtained from private laboratories attending children from middle-class families. Frequency of human toxocariasis in Jos, Plateau State, Nigeria. All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License. De Savigny D, Tizard I.


Regular deworming by a veterinarian is important to stop canine re-infections, especially if the dog is frequently outdoors. The adult worm was never identified in this case. Ocular Toxocariasis — United States, — Treatment information for toxocariasis can be found at: The two main clinical presentations of toxocariasis are visceral larva migrans and ocular larva migrans.

In OLM, the larvae produce various ophthalmologic lesions, which in some cases have been misdiagnosed as retinoblastoma, resulting in surgical enucleation. Antihelminithic drugs are used to treat infections in dogs and puppies for adult worms. Encysted stages are reactivated in female dogs during late pregnancy and infect by the transplacental and transmammary routes the puppiesin whose small intestine adult worms become established.

The size range for the three most commonly observed species differs slightly: Toxocara canis can also be transmitted through ingestion of paratenic hosts: Close-up of the anterior end of Toxocara sp. Toxocariasis is caused by larvae of Toxocara canis dog roundworm and less frequently of T. Archived from the original on 7 March However, the presence of Ascaris and Trichuris eggs in feces, indicating fecal exposure, increases the probability of Toxocara in the tissues.

CDC – Toxocariasis – Biology

In other projects Wikimedia Commons Wikispecies. Toxocara canis can also be transmitted through ingestion of paratenic hosts: In older dogs, this type of migration occurs less frequently, and at six months it is almost ceased.


Humans are paratenic hosts for Toxocara spp. In younger dogs, the larvae migrate through the lungs, bronchial tree, and esophagus; adult worms develop and oviposit in the small intestine. The prevalence of seropositivity was Its seroprevalence in the city of La Plata.

Companion Animal Parasite Control. Estudo de 13 Casos e Controles do mesmo Hospital.


Journal of Parasitology Billogico de Patologia Tropical Once in the lungs, the larvae enter into the alveoli and crawl up the trachea. Puppies are a major source of environmental egg contamination. Services on Demand Journal. Cross-reaction between Toxocara canis and Ascaris suum in the diagnosis of visceral larva migrans by western blotting technique.

This article is about the organism. There are several ways to prevent a T.

Views Read Edit View history. Humans are infected, like other paratenic hosts, by ingestion of embryonated T. January 10, Content source: Diagnosis is usually made by serology or the finding of larvae in biopsy or autopsy specimens.

Journal of Clinical Microbiology