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Epi Cystic Hydatid Disease Peru

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details. Identifier: NCT00138346
Recruitment Status : Completed
First Posted : August 30, 2005
Last Update Posted : August 27, 2010
Information provided by:
National Institute of Allergy and Infectious Diseases (NIAID)

Brief Summary:
This is a study developed by researchers from the Universidad Peruana Cayetano Heredia, the Universidad Mayor de San Marcos and other local and foreign institutions. Researchers are performing this research in human beings and animals, in order to determine the best way to understand and eliminate a parasite called Echinococcus granulosus (tapeworm). The parasite grows and develops in the dogs´ bowel. The tapeworm produces eggs which are eliminated among the feces and remain in the environment. Individuals may accidentally ingest the eggs through contaminated food or drinks and develop a disease called cystic hydatid disease. This disease mainly affects the human lungs and liver. The parasite grows in the shape of a water bag and it can jeopardize human life. It also affects sheep, goats, llamas and alpacas. The study will enroll almost 840 volunteers who are older than 5 years of age. It will last about 3 years.

Condition or disease
E. Granulosus Cystic Hydatid d

Detailed Description:
This is a 3 year study of approximately 840 male and female subjects aged 5 years old and above to be conducted in a Peruvian Highland community in Lima, Peru in order to described the dynamic and associated risk factors to both human infection and Cystic Hydatid Disease (CHD). The purpose is to determine the prevalence and incidence of both infection and disease in human population, to assess the proportion of seroconversion (positive to negative) through follow-up of the same indiviuals every year and to identify risk factors related to human infection and disease by using baseline questionnaire (e.g. husbandry practices and education level). Echinococcal infection is prevalent in regions of the world where dogs are used to care for large herds (Lima, Peru). This study involves collection of 5 ml of blood every year for 3 years. In addition, CXR and abdominal US will also be performed. Signs and symptoms of hydatid disease depend on the organ involved (lungs and liver) and the size of the cyst. At this time, the best therapeutic approach is surgical intervention preceded by careful radiological evaluation plus adjuvant chemotherapy. The mortality rate post surgery is 1-4% and for those patients who refuse to have surgery, 60%. Despite the presence of current methods of control, the parasite prevalence appears to be increasing worldwide therefore this study will obtain data to implement a control program to eradicate this zoonosis.

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Study Type : Observational
Enrollment : 840 participants
Time Perspective: Prospective
Official Title: Epidemiology of Human Cystic Hydatid Disease
Study Start Date : August 2004
Study Completion Date : April 2007

Resource links provided by the National Library of Medicine

Information from the National Library of Medicine

Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the contacts provided below. For general information, Learn About Clinical Studies.

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Ages Eligible for Study:   5 Years and older   (Child, Adult, Older Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   Yes

Inclusion Criteria:

  1. Living in study area (Cooperative Tupac Amaru).
  2. Older than five-years old

Exclusion Criteria:

1. Pregnant woman (only for chest X-ray procedure).

Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its identifier (NCT number): NCT00138346

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Universidad Nacional Mayor de San Marcos
Lima, Peru, Lima 3
Universidad Peruana Cayetano Heredia
Lima, Peru
Sponsors and Collaborators
National Institute of Allergy and Infectious Diseases (NIAID)
Layout table for additonal information Identifier: NCT00138346    
Other Study ID Numbers: 04-045
First Posted: August 30, 2005    Key Record Dates
Last Update Posted: August 27, 2010
Last Verified: December 2006
Keywords provided by National Institute of Allergy and Infectious Diseases (NIAID):
hydatid disease, Echinococcus granulosus, tapeworm
Additional relevant MeSH terms:
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Cestode Infections
Parasitic Diseases