TNH Health's Vitalk, a tool that enables an AI-powered virtual health assistant, Viki, to engage, educate and monitor large patient populations through digital conversation, the chatbot. Vitalk is currently available for download on the App store (both iOS and Android) and has free content for anyone in Brazil to access, with paid premium options available, including access to combined care between chatbot and a human health worker (nurse, psychologist etc.). Vitalk's business model works both B2C and B2B/B2G.