• Humans become infected by ingesting either embryonated eggs in soil or food or encysted larvae in raw meat from cow, sheep, or chicken. (cdc.gov)
  • Instead, the invasive larvae migrate for months through different organs until they are overcome by the human inflammatory reaction and die. (medscape.com)
  • Stool examination for Toxocara larvae is not a helpful diagnostic test for toxocariasis. (medscape.com)
  • Toxocariasis is an infection caused by the ingestion of larvae of the dog roundworm Toxocara canis or the cat roundworm Toxocara cati. (medscape.com)
  • Visceral larva migrans is caused by the migration of larvae through the internal organs of humans and the resulting inflammatory reaction. (medscape.com)
  • Diagnosis of toxocariasis is difficult because confirmation of infection requires demonstration of larvae via biopsy. (medscape.com)
  • Once introduced into the human intestine, the eggs decorticate, releasing the larvae. (medscape.com)
  • Toxocariasis is a helminthic disease due to the migration of either Toxocara canis or T. cati larvae through the human organism. (medicaljournals.se)
  • Humans become infected by ingesting either embryonated eggs from soil, dirty hands or raw vegetables, or larvae from undercooked giblets, meats or offal. (medicaljournals.se)
  • Toxocariasis is caused by Toxocara canis ( T. canis ) and, less frequently, Toxocara catis (T. catis), which are intestinal nematodes (roundworms) found in dogs and cats, respectively. (medscape.com)
  • Because the anti-Toxocara immunoglobulin-positive population is much higher than the prevalence of clinical toxocariasis, most patients are thought to have subclinical infection. (medscape.com)
  • An extensive evaluation for parasitic infection, including repeated stool tests, urinary analysis, and serologies for helminthic infections, was negative, except for an enzyme-linked immunoassay (ELISA) that was positive for excretory-secretory antigens of Toxocara (TES-ELISA). (medicaljournals.se)
  • Toxocariasis is an illness of humans caused by the dog roundworm (Toxocara canis) and, less frequently, the cat roundworm (Toxocara cati). (wikipedia.org)
  • Transmission of Toxocara to humans is usually through ingestion of infective eggs. (wikipedia.org)
  • Both Toxocara canis and Toxocara cati eggs require a several week incubation period in moist, humid weather outside a host before becoming infective, so fresh eggs cannot cause toxocariasis. (wikipedia.org)
  • Humans are not the only accidental hosts of Toxocara. (wikipedia.org)
  • There are three distinct syndromes of toxocariasis: covert toxocariasis is a relatively mild illness very similar to Löffler's syndrome. (wikipedia.org)
  • Based on prevalence and impact on public health, toxocariasis is an underestimated zoonosis in developing and developed countries. (scielo.org.co)
  • Toxocariasis is a human disease caused by infection with the larval stages of the dog or cat roundworm. (cdc.gov)
  • Treatment of toxocariasis varies, depending on the type of infection. (cdc.gov)
  • Human infection can be prevented by encouraging children not to play where animals defecate, cleaning pet areas regularly, covering sandboxes when not in use to prevent pet access, preventing geophagia, and using good hygiene practices, such as washing hands with soap and water after playing outside or with pets. (cdc.gov)
  • In humans, toxocariasis is considered an aberrant infection because humans are incidental hosts, as the parasites cannot successfully reach full maturity in the human body. (medscape.com)
  • The soil of parks and playgrounds is commonly contaminated with the eggs of T canis, and infection may cause human disease that involves the liver, heart, lung, muscle, eye, and brain. (medscape.com)
  • Prevention of toxocariasis obviously is preferable, but eradicating T canis infection is difficult because of the complexity of its life cycle. (medscape.com)
  • One of the main risk factors for the infection and development of human toxocariasis, is to cohabit with puppies and kittens. (scielo.org.co)
  • They survive for years in the environment, and humans typically ingest the eggs via oral contact with contaminated hands. (medscape.com)
  • Most frequently, human toxocariasis is caused by T. canis , a nematode roundworm of the family Ascaridae. (medscape.com)
  • Humans are paratenic hosts for T. canis . (medscape.com)
  • In this study, the adult patient presented with eosinophilic cellulitis, hepatosplenomegaly, anemia, and a positive ELISA for T. canis. (wikipedia.org)
  • involucra animales de compañía caninos y felinos, como también perros y gatos sin hogar ( Canis familiaris y Felis catus , respectivamente), que diseminan los huevos del parásito en sus heces al medio ambiente. (scielo.org.co)
  • The cutaneous signs clearly linked to human toxocariasis in case-control studies are chronic prurigo, pruritus, and urticaria (3, 4). (medicaljournals.se)
  • Humans are among the many "accidental" or paratenic hosts of these roundworms. (wikipedia.org)
  • Diagnosis is based on clinical and serologic findings. (medscape.com)
  • The latter egg is infectious if it is ingested by a human (frequently, a child). (medscape.com)
  • Covert toxocariasis is the least serious of the three syndromes and is believed to be due to chronic exposure. (wikipedia.org)
  • This paper reviews the experimental studies focused on vaccine development for toxocariasis control, and special attention is given to relevant epidemiological studies on the importance of dogs in human toxocariasis. (scielo.org.co)
  • Covert toxocariasis is often undiagnosed because the patient is not sick enough to seek medical attention. (cdc.gov)
  • Humans can also contaminate foods by not washing their hands before eating. (wikipedia.org)