Multi-country scale-up of RCRC community-based surveillance with Nyss The project aims to reduce the impact of epidemic outbreaks through early detection and response to diseases with epidemic potential, by scaling up community-based surveillance (CBS) projects. To facilitate and elevate ongoing and future CBS efforts, NorCross has developed Nyss; a custom software platform for CBS. The use of CBS is more valuable than ever in today's climate change situation, where increased likelihood of natural disasters and deforestation can lead to increased health risks.