8. Sustaining behavioural data collection over time

While cross-sectional behavioural data are clearly useful in determining who is at risk of infection and why, data showing trends over time are needed to explain changes in the epidemic and demonstrate the success of national programmes in reducing risk behaviour. Behavioural data collection systems should therefore be constructed to provide information over the long term.

In order to ensure sustainability, there is a need to rely on local expertise to carry out these surveys. When needed, special training should be targeted to host country institutions, such as government ministries, university departments, private companies, or NGOs, that are likely candidates for implementing and maintaining the recommended behavioural data collection systems. This process of institutionalisation of local skills in data collection is crucial to ensure better quality as well as sustainability of programme monitoring and evaluation activities.