Related Experiment Video
Updated: Aug 14, 2026

13:25
Transient Transduction of the Strobilated Forms of Echinococcus granulosus
Published on: September 16, 2022
Cystic echinococcosis in the Americas
1Immunization Safety Office, Office of the Director, Centers for Disease Control and Prevention, Atlanta, Georgia 30341, USA.
Parasitology International
|December 27, 2005
Summary
Cystic hydatid disease, caused by Echinococcus granulosus, is prevalent across the Americas. This review examines infection distribution and control program outcomes in American countries.
Area of Science:
- Veterinary Parasitology
- Zoonotic Diseases
- Public Health
Background:
- Cystic hydatid disease is caused by Echinococcus granulosus and its genotypic variants.
- These agents are geographically widespread throughout the American continents, from North to South America.
Purpose of the Study:
- To review the historical and current distribution of Echinococcus granulosus.
- To assess the prevalence of cystic hydatid disease in the Americas.
- To evaluate the outcomes of control and elimination programs for this infection.
Main Methods:
- Literature review of historical and current data.
- Analysis of epidemiological studies on Echinococcus granulosus distribution.
- Assessment of public health program reports on cystic hydatid disease control.
Main Results:
- Echinococcus granulosus infections are endemic across North, Central, and South America.
- Prevalence varies significantly by region and specific genotypic variant.
- Control programs show mixed results, with some successes and ongoing challenges.
Conclusions:
- Effective control requires sustained, integrated strategies addressing parasite distribution and host factors.
- Further research is needed to understand genotypic variant impacts on transmission and disease.
- Elimination efforts must be tailored to regional epidemiological patterns.
More Related Videos
Related Concept Videos
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...
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...
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...
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...
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...
Rocky Mountain Spotted Fever
Rocky Mountain Spotted Fever (RMSF) is a severe tick-borne illness caused by Rickettsia rickettsii, a Gram-negative, coccobacillary bacterium. This pathogen is an obligate intracellular parasite, requiring a host cell for replication. Transmission occurs through the bite of an infected tick. In the United States, the most important vectors are Dermacentor variabilis (American dog tick) and Dermacentor andersoni (Rocky Mountain wood tick), though other tick species may also serve as vectors.

