Skip to main content

Environmental factors as determinants of malaria risk. A descriptive study on the northern coast of Peru

Buy Article:

$43.00 plus tax (Refund Policy)

We conducted a series of studies on the northern Pacific coast of Peru to determine environmental risk factors for malaria. We report in this paper the results of both a descriptive study of incidence and a prevalence survey of malaria. Both studies showed that the area was at low risk for malaria. The malaria incidence rate was 40/1000 p.a. during the study period, and the prevalence of infection was 0.9% (95% CI: 0.4–1.7) before and 1.4% (95% CI: 0.8–2.2) after the high incidence period. However, the risk of malaria varied according to season, village and even house within a single village. Incidence rates increased from February (2.6/1000 p.a.) to May (12.9/1000 p.a.) and decreased during the second part of the year. Most of the cases were clustered in four villages that constituted only 21% of the total population of the area. Houses where multiple cases were recorded were often located near a source of water. Our observations suggested that environmental factors, and particularly the presence of water for irrigation around villages and houses, played a major role in determining the risk of malaria. These observations were extended through an entomological study and a case–control study, to be published elsewhere.
No References
No Citations
No Supplementary Data
No Article Media
No Metrics

Keywords: Peru; environmental risk factors; epidemiology; incidence rate; malaria; malaria mortality; parasite rate; prevalence; spleen rate

Document Type: Research Article

Affiliations: 1: Infectious and Tropical Disease Department, Infectious Disease Epidemiology Unit, London School of Hygiene   and Tropical Medicine, England, 2: Instituto de Medicina Tropical `Alexander von Humboldt', Universidad Peruana Cayetano Heredia, Lima, Peru, 3: Servicio de Epidemiologia, Subregion de Salud Luciano Castillo Coloma, Sullana, Peru

Publication date: 2002-06-01

  • Access Key
  • Free content
  • Partial Free content
  • New content
  • Open access content
  • Partial Open access content
  • Subscribed content
  • Partial Subscribed content
  • Free trial content
Cookie Policy
X
Cookie Policy
Ingenta Connect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more