Long-lasting insecticidal nets (LNs) constitute a core vector control intervention against malaria. A number of new LN products are under development and will require assessment of risks to humans. This document provides an updated generic model that can be used for the risk assessment of exposure t...o insecticides of individuals sleeping under LNs and during the washing of nets.
In an Annex, exposures and health risks are described for the conventional treatment or retreatment of nets (ITNs) with an insecticide considering that such practices may still be used in evaluation of ITNs and their use. The generic model does not include the risks associated with the manufacturing of LNs in a factory environment.
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Preferred product characteristics” (PPCs) are key tools to incentivize and guide the development of urgently needed health products. The PPC published here describes the characteristics of new types of insecticide-treated nets (ITNs) to control malaria transmission in areas with insecticide-resist...ant mosquito populations. The document was developed to address the public health need caused by the evolution and spread of insecticide resistance, particularly to pyrethroids. Such resistance threatens the effectiveness of the current standard of malaria vector control in many countries, namely pyrethroid-only long-lasting insecticidal nets (LLINs).
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The World Health Organization (WHO) recommends the use of insecticide-treated nets (ITNs) and intermittent preventive treatment in pregnancy (IPTp) as a cost-effective intervention for the prevention of malaria during pregnancy in endemic areas. This study was conducted to investigate: (1) the exten...t of use of both IPTp and ITNs, and (2) conduct multinomial regression to identify factors affecting the optimal usage of IPTp and ITNs among women with a recent pregnancy in Senegal.
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“Preferred product characteristics” (PPCs) are key tools to incentivize and guide the development of urgently needed health products. Some of the vector control interventions deployed in complex emergencies and in response to natural disasters – namely insecticide-treated nets (ITNs) and indoo...r residual spraying (IRS) – have already met identified public health needs in more stable settings; other tools such as insecticide-treated tarpaulins have been specifically designed for this use case. Given the diverse mix of existing and potential new interventions and the considerable gaps in the associated evidence base, this PPC aims to clearly articulate the unmet public health needs for tools designed to control malaria transmission in complex emergencies and in response to natural disasters.
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This WHO video presents updated recommendations on two new types of insecticide-treated nets (ITNs) designed to combat mosquito resistance: nets containing either pyrethroid and chlorfenapyr or pyrethroid and pyriproxyfen. The video highlights the improved effectiveness of these nets compared to sta...ndard nets and emphasises the importance of their universal use in malaria-endemic areas, particularly for pregnant women and young children where supplies are limited.
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The conditionality of this recommendation is largely driven by the current higher unit cost of pyrethroid-PBO ITNs compared
to pyrethroid-only LLINs and therefore the uncertainty of their cost-effectiveness. Furthermore, as PBO is less wash-resistant
than pyrethroids, its bioavailability declines ...faster over the three-year estimated life of an ITN; therefore, the added impact of
pyrethroid-PBO ITNs over that of pyrethroid-only LLINs may decline over time. The evidence comes from two sites in
eastern Africa with pyrethroid resistance and not from other geographies where transmission levels and vector characteristics
may vary. PBO acts by inhibiting certain metabolic enzymes, primarily oxidases, and so are likely to provide greater protection
than pyrethroid-only LLINs where mosquitoes display mono-oxygenase-based insecticide resistance mechanisms.
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Senegal has adopted the World Health Organization’s (WHO’s) three-pronged strategy for combating malaria in pregnancy (MiP): (1) intermittent preventative treatment in pregnancy (IPTp)1 via directly observed therapy (DOT), (2) distribution and use of insecticidetreated nets (ITNs), and (3) case ...management of MiP. The country began implementing IPTp in 2003.2 Senegal’s National Malaria Control Program (NMCP) has shown strong leadership in supporting key malaria interventions. 3
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In the context of limited resources, national malaria programmes may need to decide on how to prioritize all WHO-recommended interventions . This guidance document has been developed to support national malaria programmes in prioritization decisions, specifically on the deployment scope and product ...choice of insecticide-treated nets (ITNs). This guidance is to be
followed when programmes do not have sufficient budget to deploy the most effective ITNs to all populations at risk.
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The purpose of the guideline is to provide information to stakeholders on the necessary requirements for a complete prequalification dossier for insecticide-treated nets (ITNs). Its aim is to establish the baseline for dossier requirements which are necessary to assess ITN products for the purposes ...of prequalification, describe the data requirements for fulfilling each dossier module, and to provide standardized information for applicants and testing facilities generating data for ITN prequalification dossiers. The document is supported by implementation guidance documents which provide specific information and considerations for how applicants may approach the generation of supporting information and compilation of a complete product dossier.
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The fact sheet details transmission methods, symptoms, at-risk populations, diagnostic approaches, treatment options—including the use of artemisinin-based combination therapies (ACTs)—and preventive measures such as insecticide-treated nets (ITNs) and indoor residual spraying (IRS). It also dis...cusses the impact of malaria on vulnerable groups like children under five and pregnant women, and outlines WHO's global response strategies aimed at reducing malaria incidence and mortality rates.
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Malaria remains a significant public health concern in the SADC region, accounting for 20% of childhood deaths, as well as prompting numerous outpatient visits and hospitalisations. Around three-quarters of the population, including 35 million children under the age of five and 8.5 million pregnant ...women, are at risk. Transmission patterns vary from high and stable in the north to malaria-free in the south, with low, unstable and seasonal zones in between. Although interventions such as indoor residual spraying (IRS), insecticide-treated nets (ITNs/LLINs), intermittent preventive treatment in pregnancy (IPTp), rapid diagnostic tests (RDTs), and artemisinin-based combination therapies (ACTs) have reduced the malaria burden, challenges persist in terms of funding, human resources, surveillance, and cross-border coordination. Achieving malaria elimination in the SADC region requires harmonised regional standards, strengthened surveillance, and improved access to quality treatment and policy prioritisation.
Accessed on 27/08/2025.
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The Zambia Malaria Campaign, implemented by Breakthrough ACTION, used culturally tailored radio adverts and a campaign song to encourage key behaviours for preventing and treating malaria. The campaign targeted high-risk groups, such as pregnant women and caregivers of children under five, and deliv...ered messages in multiple local languages, including English, Siswati and Tonga. The audio content encouraged the consistent use of insecticide-treated nets (ITNs), seeking timely care for fevers, and preventing malaria during pregnancy. Through addressing common myths and promoting positive social norms in an engaging way, the campaign aimed to increase community knowledge and encourage long-lasting behavioural change in malaria-endemic regions of Zambia.
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Key Findings (in booklet form) from the 2013 Rwanda Malaria Indicator Survey. The 2013 Rwanda Malaria Indicator Survey (RMIS) assessed malaria knowledge, prevention, and treatment practices. Over 4,700 households were interviewed.
Massoda Tonye et al. Malar J (2018) 17:156
https://doi.org/10.1186/s12936-018-2284-7
Background: In 2011, the demographic and health survey (DHS) in Cameroon was combined with the multiple indicator
cluster survey. Malaria parasitological data were collected, but the survey period did not overl...ap with the high
malaria transmission season. A malaria indicator survey (MIS) was also conducted during the same year, within the
malaria peak transmission season. This study compares estimates of the geographical distribution of malaria parasite
risk and of the effects of interventions obtained from the DHS and MIS survey data.
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DHS Further Analysis Reports No. 103