Huge progress made using insecticide-treated bednets from 2000-2007

November 17, 2008

There has been a huge increase in the numbers of children protected from malaria by insecticide-treated bednets (ITNS) from 2000 to 2007, now at around 20 million. However, some 90 million children are still unprotected, with 25% of these in Nigeria alone. Mapping ITN coverage can help in the scale-up of disease-prevention strategies. These are the conclusions of an Article published Online first and in an upcoming edition of The Lancet, written by Dr Abdisalan Noor, KEMRI-University of Oxford-Welcome Trust Collaborative Programme, Nairobi, Kenya, and colleagues.

The authors computed the projected ITN coverage among children less than 5 years for age-adjusted population data that were stratified according to malaria transmission risks, proximate determinants of poverty, and methods of ITN delivery. They found that in 2000, only 1.7 million (1.8%) of African children living in stable malaria-endemic conditions were protected by an ITN and the number increased to 20.3 million (18.5%) by 2007, leaving 89.6 million children unprotected. Of these, 30 million were living in some of the poorest areas of Africa; 54% were living in only seven countries and 25% in Nigeria alone. Overall, 33 (83%) of countries were estimated to have an ITN coverage of less than 40% in 2007. On average, a greater increase in ITN coverage was noted in areas where free distribution had operated between survey periods.

The authors conclude: "Definition of vulnerability and unmet need is central to effective investment strategies by the donor community. Mapping risks, target populations, vulnerability, and coverage provides a means to redress deficiencies in the international calls for 80% coverage of ITN by 2015.These targets remain elusive across vast areas of Africa. Increased funding and more informed use of this funding is desperately needed to protect more children in the most vulnerable and most populated areas of Africa."

In an accompanying Comment, Dr Lawrence Slutsker and Dr Robert D Newman, Malaria Branch, Centers for Disease Control and Prevention, Atlanta, GA, USA, say: "Focus must be maintained on improving and sustaining scale-up in high burden countries. At the same time, the strategies and planning for strengthening surveillance, health systems, human-resource capacity, and regional coordination mechanisms must proceed. Lessons learned over the next 5-10 years in pursuing elimination in areas with lower transmission rates will help to guide future approaches in countries with currently intolerable malaria burdens."
-end-
Dr Abdisalan Noor, KEMRI-University of Oxford-Welcome Trust Collaborative Programme, Nairobi, Kenya T) +254 20 2715160 / 2720163 / 2719936 E) anoor@nairobi.kemri-wellcome.org

Dr Lawrence Slutsker, Malaria Branch, Centers for Disease Control and Prevention, Atlanta, GA, USA T) +1 678 469 9728 E) lms5@cdc.gov

For full Article and Comment: : http://press.thelancet.com/bednetprogressfinal.pdf

Lancet

Related Malaria Articles from Brightsurf:

Clocking in with malaria parasites
Discovery of a malaria parasite's internal clock could lead to new treatment strategies.

Breakthrough in malaria research
An international scientific consortium led by the cell biologists Volker Heussler from the University of Bern and Oliver Billker from the UmeƄ University in Sweden has for the first time systematically investigated the genome of the malaria parasite Plasmodium throughout its life cycle in a large-scale experiment.

Scientists close in on malaria vaccine
Scientists have taken another big step forward towards developing a vaccine that's effective against the most severe forms of malaria.

New tool in fight against malaria
Modifying a class of molecules originally developed to treat the skin disease psoriasis could lead to a new malaria drug that is effective against malaria parasites resistant to currently available drugs.

Malaria expert warns of need for malaria drug to treat severe cases in US
The US each year sees more than 1,500 cases of malaria, and currently there is limited access to an intravenously administered (IV) drug needed for the more serious cases.

Monkey malaria breakthrough offers cure for relapsing malaria
A breakthrough in monkey malaria research by two University of Otago scientists could help scientists diagnose and treat a relapsing form of human malaria.

Getting to zero malaria cases in zanzibar
New research led by the Johns Hopkins Center for Communication Programs, Ifakara Health Institute and the Zanzibar Malaria Elimination Program suggests that a better understanding of human behavior at night -- when malaria mosquitoes are biting -- could be key to preventing lingering cases.

Widely used malaria treatment to prevent malaria in pregnant women
A global team of researchers, led by a research team at the Liverpool School of Tropical Medicine (LSTM), are calling for a review of drug-based strategies used to prevent malaria infections in pregnant women, in areas where there is widespread resistance to existing antimalarial medicines.

Protection against Malaria: A matter of balance
A balanced production of pro and anti-inflammatory cytokines at two years of age protects against clinical malaria in early childhood, according to a study led by ISGlobal, an institution supported by ''la Caixa'' Foundation.

The math of malaria
A new mathematical model for malaria shows how competition between parasite strains within a human host reduces the odds of drug resistance developing in a high-transmission setting.

Read More: Malaria News and Malaria Current Events
Brightsurf.com is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to Amazon.com.