Featured Research

from universities, journals, and other organizations

Human movement may have brought Chagas disease to urban Peru

Date:
December 17, 2009
Source:
Public Library of Science
Summary:
New research shows how the migration and settlement patterns associated with the rapid urbanization of Peru may link to Chagas disease transmission. The study, suggests that the practice of shantytown residents from Arequipa making frequent seasonal moves to rural valleys where Chagas vectors are present may have contributed to the growing presence of Chagas disease near urban Arequipa, Peru.

New research shows how the migration and settlement patterns associated with the rapid urbanization of Peru may link to Chagas disease transmission. The study, published December 15 in the open-access journal PLoS Neglected Tropical Diseases, suggests that the practice of shantytown residents from Arequipa making frequent seasonal moves to rural valleys where Chagas vectors are present may have contributed to the growing presence of Chagas disease near urban Arequipa, Peru.

Chagas disease causes more morbidity and mortality than any other parasitic disease in the Western Hemisphere. Vector-borne transmission occurs only in the Americas, where 8-10 million people currently have the disease. Despite remarkable successes in vector control, major challenges remain, among them the increasing urbanization of the disease.

Therefore, the researchers held discussions with groups of residents from communities around Arequipa to talk about changes in their communities in the past 40 years, including the communities' evolving demographics and the historical and current presence of triatomine insects, known locally as chirimachas. They also conducted interviews with individual residents about their life histories, with a focus on their migration histories, the presence of chirimachas, and animal raising in each place of residence.

The study found that migrants to shantytowns in Arequipa were unlikely to have brought triatomines to the city upon arrival. Instead, certain characteristics of shantytowns and their residents were revealed as key to Chagas transmission. Frequent seasonal moves by shantytown residents to rural valleys with chirimachas are an important contributor. The recent, rapid settlement of shantytowns and the practice of raising domestic animals, often in close proximity to houses, provides a favorable environment for proliferation and dispersal of the vectors.

The researchers propose three key interventions for improving the control of chirimachas in Arequipa and other urban areas with an emerging presence of Chagas disease. These include intensifying vector surveillance in areas with highly mobile populations, creating educational campaigns for migrant workers in Chagas-endemic areas, and fomenting collaboration between the Ministries of Health and Housing to include new shantytowns in the vector surveillance system.


Story Source:

The above story is based on materials provided by Public Library of Science. Note: Materials may be edited for content and length.


Journal Reference:

  1. Bayer AM, Hunter GC, Gilman RH, Cornejo del Carpio JG, Naquira C, et al. Chagas Disease, Migration and Community Settlement Patterns in Arequipa, Peru. PLoS Neglected Tropical Diseases, 2009; 3 (12): e567 DOI: 10.1371/journal.pntd.0000567

Cite This Page:

Public Library of Science. "Human movement may have brought Chagas disease to urban Peru." ScienceDaily. ScienceDaily, 17 December 2009. <www.sciencedaily.com/releases/2009/12/091215141516.htm>.
Public Library of Science. (2009, December 17). Human movement may have brought Chagas disease to urban Peru. ScienceDaily. Retrieved September 2, 2014 from www.sciencedaily.com/releases/2009/12/091215141516.htm
Public Library of Science. "Human movement may have brought Chagas disease to urban Peru." ScienceDaily. www.sciencedaily.com/releases/2009/12/091215141516.htm (accessed September 2, 2014).

Share This




More Science & Society News

Tuesday, September 2, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Get A Mortgage, Receive A Cat — Only In Russia

Get A Mortgage, Receive A Cat — Only In Russia

Newsy (Sep. 2, 2014) The incentive is in keeping with a Russian superstition that it's good luck for a cat to be the first to cross the threshold of a new home. Video provided by Newsy
Powered by NewsLook.com
Raw: Thousands of Fish Dead in Mexico Lake

Raw: Thousands of Fish Dead in Mexico Lake

AP (Sep. 2, 2014) Over 53 tons of rotting fish have been removed from Lake Cajititlan in western Jalisco state. Authorities say that the thousands of fish did not die of natural causes. (Sep. 2) Video provided by AP
Powered by NewsLook.com
U.N. Says Ebola Travel Restrictions Will Cause Food Shortage

U.N. Says Ebola Travel Restrictions Will Cause Food Shortage

Newsy (Sep. 2, 2014) The U.N. says the problem is two-fold — quarantine zones and travel restrictions are limiting the movement of both people and food. Video provided by Newsy
Powered by NewsLook.com
Get on Your Bike! London Cycling Popularity Soars Despite Danger

Get on Your Bike! London Cycling Popularity Soars Despite Danger

AFP (Sep. 1, 2014) Wedged between buses, lorries and cars, cycling in London isn't for the faint hearted. Nevertheless the number of people choosing to bike in the British capital has doubled over the past 15 years. Duration: 02:27 Video provided by AFP
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:
from the past week

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins