We use Information Ecosystem Analysis to understand how health information is sourced, shared and trusted at community level, including informal information flows and the power of local influencers. This understanding is the basis of our Community Engagement work that maintains conversations with the communities we serve, either face to face, on social media, or through local media outlets. By keeping our finger on the pulse of community health concerns and information needs, we are able to track, analyze and respond to rumors and other information trends as they arise.