Remark This recommendation addresses the use of untreated screening of windows, ceilings, doors and/or eave spaces, and does not cover other ways of blocking entry points in houses.

Practical Info If house screening is being considered as a means to prevent malaria, it is important to identify who the end-user will be and how the intervention will be implemented, i.e. whether this would be a tool that the program promotes for individuals or communities to implement at their own cost, or if screening of houses is undertaken as a programmatic initiative. Depending on the approach, the resources needed, feasibility, up-take and impact on equity may vary and would need to be considered. Screening of houses may be done post-construction or could be a standard feature for new homes. Intersectoral collaboration, for example between health, housing and environmental sectors, is crucial in the implementation of house screening. It is also important to consider what standards and criteria, if any, need to be set for screening materials and designs as they are for buildings. Screening of residential houses should be part of an integrated vector management (IVM) approach as promoted under the Global Vector Control Response (13) and deployment of interventions recommended for large-scale deployment (such as ITN or IRS) should be maintained. In settings where national or local government authorities are not able to provide screening of residential houses as a public health strategy (e.g., due to feasibility/ resource challenges), they should promote its use amongst affected communities. If house screening is deployed or adopted by communities to prevent malaria, post-distribution monitoring of the intervention is needed to assess material durability, usage, and coverage. This information should guide how regularly screens require replacement or repair and provide information on the sustainability of the intervention.