Generic risk assessment model for indoor and outdoor space spraying of insecticides — Second Edition
Overview
The purpose of this document is to provide a generic model that can be used for risk assessment of exposure to insecticide products applied as space treatments, both indoors and outdoors, against flying insect vectors and pests of public health importance. It aims to harmonize the risk assessment of such insecticides for public health use. The assessment considers exposures for both adults and children (all ages) as well as people in the following specific categories:
- those handling insecticides and preparing/loading the spray liquid in application equipment;
- those applying the spray indoors and outdoors;
- residents who return to treated houses after a specified time following treatments; and
- bystanders who are present during an outdoor application.
In addition to human health risk assessment, aspects of ecological risk assessment must be considered. In contrast to the former, ecological risk assessment characterizes the risk to populations of non-target organisms other than to humans.
The structure of this document generally follows that of A generic risk assessment model for insecticide-treated nets (WHO, 2018b). Because risk assessment is constantly evolving process, guidance is also subject to change. Readers are therefore advised to consider any updated guidance published by WHO and other authoritative sources in the future.
