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Related Concept Videos

Toxoplasmosis01:28

Toxoplasmosis

Toxoplasmosis, a zoonotic disease caused by the protozoan Toxoplasma gondii, poses significant public health challenges globally due to its high seroprevalence and varied clinical manifestations. As an obligate intracellular parasite, T. gondii can infect all warm-blooded vertebrates, but felids are its only definitive hosts, shedding unsporulated oocysts into the environment. Humans typically acquire the infection through ingestion of tissue cysts in undercooked meat or oocysts from...
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Giardiasis

Giardiasis is a globally prevalent intestinal infection caused by the protozoan parasite Giardia duodenalis (also known as G. lamblia or G. intestinalis). This flagellated protozoan is the most frequently identified intestinal parasite in the United States and worldwide. Transmission primarily occurs via the fecal-oral route, with infection arising from ingestion of water or food contaminated with cysts. Individuals in low-resource settings, international travelers, outdoor enthusiasts, daycare...
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American Trypanosomiasis

Chagas disease, or American trypanosomiasis, is a vector-borne parasitic infection caused by Trypanosoma cruzi, a flagellated protozoan (kinetoplastid) of the family Trypanosomatidae. The disease is endemic in Latin America, although cases are increasingly reported worldwide due to human migration. Transmission most commonly occurs when feces of infected triatomine bugs contaminate bite wounds or mucosal surfaces; additional routes include congenital, transfusional, transplant-related, and oral...
Amebiasis01:28

Amebiasis

Entamoeba histolytica, a protozoan parasite, is responsible for intestinal and extraintestinal amebiasis. Though a significant proportion of infections remain asymptomatic, approximately 50 million individuals annually are estimated to present with clinical disease, resulting in up to 100,000 deaths globally. The disease burden is disproportionately high in regions with lower socioeconomic status, such as parts of India, Africa, Mexico, and Latin America.Etiology and TransmissionThe infective...
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Leishmaniasis

Leishmaniasis is a protozoal disease caused by species of the genus Leishmania and transmitted through the bite of infected female sandflies. The parasite exists in two principal morphological forms during its life cycle. A sandfly acquires intracellular amastigotes from an infected reservoir host, such as a dog. Within the sandfly, these forms differentiate into motile, flagellated promastigotes. During a subsequent blood meal, promastigotes are injected into the human host, where they...
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Malaria

Malaria pathogenesis in humans reflects a delicate interplay between parasite biology and host response. Clinical illness reflects a host’s immune response to the parasite’s asexual replication cycle, which is often asymptomatic in individuals with partial immunity. From the parasite's perspective, transmission between mosquito and human with minimal host pathology is evolutionarily advantageous. Among the six Plasmodium species infecting humans, P. falciparum and P. vivax dominate in global...

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Determining Soil-transmitted Helminth Infection Status and Physical Fitness of School-aged Children
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[Ectoparasitoses in childhood].

R Fölster-Holst1, H Hamm

  • 1Dermatologie, Venerologie und Allergologie, Universitätsklinikum Schleswig-Holstein, Campus Kiel, Kiel, Deutschland. rfoelsterholst@dermatology.uni-kiel.de

Der Hautarzt; Zeitschrift Fur Dermatologie, Venerologie, Und Verwandte Gebiete
|May 12, 2009
PubMed
Summary
This summary is machine-generated.

Skin parasites like mites, lice, and ticks are common, especially in children. This content details ectoparasites such as scabies, head lice, and insect bites, focusing on their impact during childhood.

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Area of Science:

  • Dermatology
  • Parasitology
  • Entomology

Context:

  • Ectoparasites are organisms living on the skin's surface.
  • Arthropods and worms represent common ectoparasites.
  • Skin infestations are prevalent in pediatric populations.

Purpose:

  • To describe common ectoparasites affecting the skin.
  • To detail pediatric skin conditions caused by parasites.
  • To provide an overview of parasitic skin infections.

Summary:

  • Parasites live on or in a host species.
  • Skin-dwelling ectoparasites include mites, lice, fleas, ticks, and cercaria.
  • Common childhood conditions include pediculosis capitis, scabies, insect bites, trombidioses, and cercarial dermatitis.

Impact:

  • Increased understanding of pediatric dermatological conditions.
  • Awareness of common ectoparasites and their effects.
  • Foundation for diagnosing and managing skin parasitic infections in children.