Navigation Links
Repellents between dusk and bedtime make insecticide-treated bednets more effective
Date:11/12/2007

Using insect repellent in addition to insecticide treated bednets (ITNs) has been shown to provide greater protection against malaria in areas where mosquitoes feed in the early evening.

The findings of a study carried out by the team based at the London School of Hygiene & Tropical Medicine and working in collaboration with the National Bureau of Malaria Control at the Ministry of Health in La Paz, Bolivia, are published today in the British Medical Journal.

36% of the population of the Americas live in areas with a risk of malaria. This includes 293 million people in 21 endemic countries. Of the 1.14 million cases of malaria reported in the Americas during 2000, 87% were recorded in the Amazonian subregion of South America.

The primary malaria vector in the Amazon in anopheles Darlingi. Its peak biting activity is between 8 and 10pm, and more than 80% of feeding occurs before most local people to go bed, where they can be protected by an insecticide treated bednet. Tourists visiting the area are already advised to use repellents as well as bed nets. The researchers sought to determine whether this advice was justified, and whether the combination of repellents and ITNs is indeed more effective in reducing malaria than using ITNs alone.

4008 individuals, based in 860 households in rural villages and peri-urban districts in the Bolivian Amazon, were divided into two groups; all participants already slept under ITNs, but one group also used a plant-based insect repellent, and the second a placebo.

The result was an 80% reduction in episodes of p.vivax (the malaria parasite) in the group that used both ITNs and repellent.

Nigel Hill, a Medical Entomologist at the London School of Hygiene & Tropical Medicine, and lead author of the study, comments: Prior to this study, it was already known that ITNs are a highly effective way of reducing morbidity and mortality from malaria in Africa, where local vectors bite indoors, late at night. Insect repellents were also known to reduce bites, but the extent to which they were able to protect against insect-borne disease was less clear.

The findings from this study tell us that treated bednets should not be used as the only means of treating malaria in areas where vectors feed mainly in the evening. Use of an insect repellent can significantly reduce the risk of malaria. The combined use of a repellent and a treated bednet should be advocated to those travelling to malaria risk areas.


'/>"/>

Contact: Lindsay Wright
lindsay.wright@lshtm.ac.uk
020-792-72802
London School of Hygiene & Tropical Medicine
Source:Eurekalert

Related medicine news :

1. Comparison of obstetric outcomes between on-call and patients own obstetricians
2. Mailman School of Public Health study examines link between racial discrimination and substance use
3. New link between estrogen and breast cancer
4. Link Uncovered Between Benign Prostatic Hyperplasia and NSAIDs, Says Harvard Mens Health Watch
5. Link Between Chronic Pain and Insomnia Uncovered at PAINWeek 2007
6. Scientists demonstate link between genetic variant and effectiveness of smoking cessation meds
7. Researchers discover correlation between GERD and obesity in females
8. NIH awards $10.8M to Columbia to study connection between diabetes and heart disease
9. Researchers Pinpoint Link Between Caloric Restriction and Longevity
10. Link Between Air Pollution, Stroke Gets Clearer
11. No Link Between Anti-Nausea Drug, Heart Trouble
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:9/20/2017)... ... September 20, 2017 , ... Recognising that in ... from Leany Greeny delivers positive results in just three weeks. Setting the groundwork ... the metabolism. Fitting seamlessly into hectic work and family schedules, participants can lose ...
(Date:9/20/2017)... ... September 20, 2017 , ... “RECYCLED Ezekiel's Plan ... Plan for Freedom from ADDICTION” is the creation of published author, Bill Miller. ... addiction and homeless services, including more than a decade of addiction to prescription ...
(Date:9/20/2017)... (PRWEB) , ... September 20, 2017 , ... Houston, Texas, ... team took Friday, September 8, and Monday, September 11, off work and rolled up ... Baptist Church before heading to local homes to start the process of rebuilding. , ...
(Date:9/20/2017)... , ... September 20, 2017 , ... “Psalms of Humidity”: ... peace of mind and move the readers one step closer to God. “Psalms of ... realized that his mistakes that have been made within his life are the very ...
(Date:9/20/2017)... ... September 20, 2017 , ... “The Financial Favor of God; ... Favor of God; Second Edition” is the creation of published author, Brooks Rathell. , ... opportunity to talk to you about the financial favor of God. Not only does ...
Breaking Medicine News(10 mins):
(Date:8/29/2017)... RANDOLPH, N.J. , Aug. 29, 2017 ... inventory management, security, and regulatory compliance for veterinary practices ... today announced a new partnership that makes TITAN,s expertise ... legal compliance available to Cubex,s clients nationally. ... healthcare provider buying and handling controlled substances is at ...
(Date:8/28/2017)... division of LightScalpel ®, LLC, is announcing its new line of ... American veterinary laser surgery innovation, Aesculight® is revolutionizing veterinary laser surgery once ... ... VetScalpel laser. Dr. Duclos practices veterinary dermatology at the Animal Skin and ... ...
(Date:8/25/2017)... --  West Pharmaceutical Services, Inc. (NYSE: WST), a global ... management will be presenting a West business overview at three ... Management will present at the Baird 2017 Global Healthcare Conference, ... York, N.Y. , at 3:10 p.m. EDT on Wednesday, ... Westin Boston Waterfront in Boston, Mass. , ...
Breaking Medicine Technology: