Navigation Links
Control malaria by segmenting sleeping arrangements
Date:11/18/2013

Better malaria control might come from segregating household sleeping arrangements, according to a new study co-authored by a University of Guelph professor.

The researchers found malaria eradication related more to household size than to a country's wealth or temperature. Guelph economics professor Ross McKitrick and two Finnish professors, Larry and Lena Huldn, found that when average household size drops below four persons, malaria extermination is much more likely.

Malaria is transmitted by infected mosquitoes. The research team examined data on malaria insect vectors, as well as demographic, sociological and environmental factors for 232 countries. Malaria is still prevalent in 106 countries.

"When we controlled for all the variables, the factor that had the most explanatory power on malaria control was household size," said McKitrick.

"Malaria-bearing mosquitoes mainly feed at night, and tend to return to the same location for blood meals. The more people who sleep in one area, the greater the likelihood of an infected mosquito spreading the parasite to a new, uninfected victim."

Malaria infects red blood cells and can cause anemia, nausea, fever and, in some cases, death. Each year, 225 million people are infected and 800,000 die, mostly children.

"It is a common misconception that malaria is a tropical disease, and with 90 per cent of malaria deaths taking place in Africa, it is easy to see why people believe this," said McKitrick.

"But historically, malaria has occurred in all climate zones including the Arctic, and was endemic in North America and Europe a hundred years ago. In many cases, the disease disappeared even in countries that made no efforts to fight it, while others that tried to eradicate it failed. We found declining average household size key to explaining this pattern. "

The researchers looked at factors such as gross domestic product per capita, urbanization and slums, latitude, mean temperature, forest coverage, national DDT us, household size and even religion.

Countries with a significant Muslim population generally had large households but did a better job of eradicating malaria, with the researchers speculating it may be because of their segregated sleeping arrangements. Males and females generally sleep in separate areas.

As household size continues to decline, said McKitrick, malaria should gradually disappear. But countries need not wait for that to happen.

In Vanuatu with an average 5.6 people per household providing bed nets and effective drug distribution and surveillance since 1996 has effectively wiped out malaria.

"The key factor is segmenting sleeping quarters and greater use of bed nets in those countries where malaria is still prevalent," he said.

"Individual bed nets can emulate a household with several bedrooms, making it difficult for the mosquitoes to transmit the parasite to other household members."


'/>"/>

Contact: Ross McKitrick
rmckitri@uoguelph.ca
519-824-4120 x52532
University of Guelph
Source:Eurekalert

Related biology news :

1. NIH funds researchers using light to control and monitor neural activity
2. Snakes control blood flow to aid vision
3. Automated system promises precise control of medically induced coma
4. Controlling the triggers of age-related inflammation could extend healthspan
5. Targeted culling of deer controls disease with little effect on hunting
6. Pest control presentations at Entomology 2013
7. Melatonin helps control weight gain as it stimulates the appearance of beige fat
8. Sensors allow for efficient irrigation, give growers more control over plant growth
9. In odd-looking mutant, clues about how maize plants control stem cell number
10. Discovery of cell division master controller may improve understanding and treatment of cancer
11. Drug resistance-associated genes: A cornerstone for the control and protection against tuberculosis
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:6/9/2016)... ISTANBUL , June 9, 2016  Perkotek an innovation leader in attendance control ... to seamlessly log work hours, for employers to make sure the right employees are ... Logo - http://photos.prnewswire.com/prnh/20160609/377486LOGO ... ... ...
(Date:6/2/2016)... June 2, 2016 The Department of ... awarded the 44 million US Dollar project, for the ... Plates including Personalization, Enrolment, and IT Infrastructure , ... the production and implementation of Identity Management Solutions. Numerous renowned ... Decatur was selected for the most ...
(Date:5/24/2016)... patient care by providing unparalleled technology to leaders of the medical imaging industry.  As ... added to the range of products distributed by Ampronix. Photo - ... ... ... ...
Breaking Biology News(10 mins):
(Date:6/27/2016)... June 27, 2016   Ginkgo Bioworks , a ... engineering, was today awarded as one of the ... the world,s most innovative companies. Ginkgo Bioworks is ... the real world in the nutrition, health and ... directly with customers including Fortune 500 companies to ...
(Date:6/24/2016)... ... June 24, 2016 , ... Researchers at the Universita Politecnica delle ... people with peritoneal or pleural mesothelioma. Their findings are the subject of a new ... , Diagnostic biomarkers are signposts in the blood, lung fluid or tissue of mesothelioma ...
(Date:6/23/2016)... - FACIT has announced the creation of a ... Propellon Therapeutics Inc. ("Propellon" or "the Company"), to ... of first-in-class WDR5 inhibitors for the treatment of ... an exciting class of therapies, possessing the potential ... patients. Substantial advances have been achieved with the ...
(Date:6/23/2016)... -- The Prostate Cancer Foundation (PCF) is pleased to announce 24 new ... prostate cancer. Members of the Class of 2016 were selected from a pool ... Read More About the Class of 2016 PCF Young Investigators ... ... ...
Breaking Biology Technology: