Featured Research

from universities, journals, and other organizations

Urban Slum Conditions Are A Source Of Leptospirosis

Date:
April 25, 2008
Source:
Public Library of Science
Summary:
A study conducted in an urban slum setting in Salvador, Brazil has found that open sewers, accumulations of refuse, and inadequate floodwater drainage are acting as sources for transmission of the disease leptospirosis.

A study conducted in an urban slum setting in Salvador, Brazil has found that open sewers, accumulations of refuse, and inadequate floodwater drainage are acting as sources for transmission of the disease leptospirosis.

Leptospirosis, caused by the bacterium Leptospira, is transmitted during direct contact with animal reservoirs or water and soil contaminated with animals' urine. The disease can range in severity from a mild flu-like illness to life-threatening forms of the diseases, such as Weil's disease (which kills over 1 in 10) and severe pulmonary hemorrhage syndrome (which kills over 1 in 2). The huge growth of urban slum communities worldwide has produced conditions for rodent-borne transmission.

In the new study, Dr Albert Ko (Centro de Pesquisas Gonçalo Moniz, Fundação Oswaldo Cruz, Ministério da Saúde, Salvador, Brazil) and colleagues tested 3,171 slum residents for Leptospira antibodies, which are a marker of past infection with the bacterium. The researchers then used Geographical Information System (GIS) and modeling approaches to identify deficiencies in the sanitation infrastructure of the slum that were linked to Leptospira infection. They also investigated whether there was a link between poverty and Leptospira infection.

Dr Ko and colleagues found that the households of those with Leptospira antibodies clustered in squatter areas at the bottom of valleys. The risk of acquiring Leptospira antibodies was higher in people living in flood-risk regions with open sewers, or near to accumulated refuse, and those who saw rats or lived in the presence of chickens. In addition, being poor was a risk factor for infection--an increase of US$1 per day in per capita household income was associated with an 11% decrease in infection risk.

"These findings," say the authors, "indicate that effective prevention of leptospirosis will need to address the social factors that produce unequal health outcomes among slum residents, in addition to improving sanitation."

Journal reference: Reis RB, Ribeiro GS, Felzemburgh RDM, Santana FS, Mohr S, et al. (2008) Impact of Environment and Social Gradient on Leptospira Infection in Urban Slums. PLoS Negl Trop Dis 2(4): e228. doi:10.1371/journal.pntd.0000228

 


Story Source:

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


Cite This Page:

Public Library of Science. "Urban Slum Conditions Are A Source Of Leptospirosis." ScienceDaily. ScienceDaily, 25 April 2008. <www.sciencedaily.com/releases/2008/04/080422203308.htm>.
Public Library of Science. (2008, April 25). Urban Slum Conditions Are A Source Of Leptospirosis. ScienceDaily. Retrieved April 19, 2014 from www.sciencedaily.com/releases/2008/04/080422203308.htm
Public Library of Science. "Urban Slum Conditions Are A Source Of Leptospirosis." ScienceDaily. www.sciencedaily.com/releases/2008/04/080422203308.htm (accessed April 19, 2014).

Share This



More Health & Medicine News

Saturday, April 19, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Nine-Month-Old Baby Can't Open His Mouth

Nine-Month-Old Baby Can't Open His Mouth

Newsy (Apr. 19, 2014) — Nine-month-old Wyatt Scott was born with a rare disorder called congenital trismus, which prevents him from opening his mouth. Video provided by Newsy
Powered by NewsLook.com
'Holy Grail' Of Weight Loss? New Find Could Be It

'Holy Grail' Of Weight Loss? New Find Could Be It

Newsy (Apr. 18, 2014) — In a potential breakthrough for future obesity treatments, scientists have used MRI scans to pinpoint brown fat in a living adult for the first time. Video provided by Newsy
Powered by NewsLook.com
Little Progress Made In Fighting Food Poisoning, CDC Says

Little Progress Made In Fighting Food Poisoning, CDC Says

Newsy (Apr. 18, 2014) — A new report shows rates of two foodborne infections increased in the U.S. in recent years, while salmonella actually dropped 9 percent. Video provided by Newsy
Powered by NewsLook.com
Scientists Create Stem Cells From Adult Skin Cells

Scientists Create Stem Cells From Adult Skin Cells

Newsy (Apr. 17, 2014) — The breakthrough could mean a cure for some serious diseases and even the possibility of human cloning, but it's all still a way off. Video provided by Newsy
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