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Epi Cystic Hydatid Disease Peru

This study has been completed.
Information provided by:
National Institute of Allergy and Infectious Diseases (NIAID) Identifier:
First received: August 26, 2005
Last updated: August 26, 2010
Last verified: December 2006
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.

E. Granulosus Cystic Hydatid d

Study Type: Observational
Study Design: Time Perspective: Prospective
Official Title: Epidemiology of Human Cystic Hydatid Disease

Resource links provided by NLM:

Further study details as provided by National Institute of Allergy and Infectious Diseases (NIAID):

Estimated Enrollment: 840
Study Start Date: August 2004
Estimated Study Completion Date: April 2007
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.

Ages Eligible for Study:   5 Years and older   (Child, Adult, Senior)
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).

  Contacts and Locations
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, see Learn About Clinical Studies.

Please refer to this study by its identifier: NCT00138346

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)
  More Information Identifier: NCT00138346     History of Changes
Other Study ID Numbers: 04-045
Study First Received: August 26, 2005
Last Updated: August 26, 2010

Keywords provided by National Institute of Allergy and Infectious Diseases (NIAID):
hydatid disease, Echinococcus granulosus, tapeworm

Additional relevant MeSH terms:
Cestode Infections
Parasitic Diseases processed this record on September 21, 2017