Generic risk assessment model for indoor and outdoor space spraying of insecticides -- First revision

Overview

This document provides a generic model that can be used for risk assessment of exposure to insecticide products applied as space treatment, 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 both adults and children and people in the following specific categories:

• those preparing the spray;
• those applying the spray;
• residents who return to treated houses; and
• bystanders who are present during an outdoor application.

In addition to human health risk assessment, aspects of ecological risk assessment need to be considered. In contrast to the former, ecological risk assessment characterizes the risk to populations of non-target organisms rather than to humans.

The structure of this document follows that of A generic risk assessment model for insecticide treatment and subsequent use of mosquito nets (WHO, 2004). Because risk assessment is a constantly evolving process, guidance is also subject to change. Readers are therefore advised to consider any newer guidance published by WHO and other authoritative sources.