Through a qualitative in-depth multi-method examination of Vaccine Hunters Canada, an online volunteer run community effort that helped people in Canada find COVID-19 vaccines between 2021 and 2022, this dissertation offers theoretical and applied contributions to our understanding of how online communities of practice form and maintain themselves during prolonged crises. By understanding the trajectory of these communities, how they form and operate, and the nature of community interactions, this research offers insights into the dynamics of digital organizing and community formation beyond the specific case of Vaccine Hunters Canada. I engaged in a thematic analysis of data collected from interviews with 13 VHC community organizers and 20 residents across the Greater Toronto area who used Vaccine Hunters Canada social media channels to find vaccine appointments taken in conjunction with participant observations across two Vaccine Hunters Canada platforms, Discord and Twitter and platform walkthrough analyses of Discord and Twitter. While much of discourse about online community organizing revolves around whether or not digital media are effective tools for creating social change, this research moves away from technologically deterministic narratives to interrogates the processes and community labor that underpinned the dissolution of VHC focusing on how patterns of race, class, and power as well as localized dynamics and relationships with institution and other community groups shaped the dynamics within the online community. In this dissertation I posit that that Vaccine Hunters Canada is notable for a hyperlocal yet virtually scalable approach to crisis management which was shaped by mutually constitutive processes of community formation and technology use within the community’s operations over time. Ultimately this research offers an emergent framework of understanding crisis communication communities such as VHC as necessarily entangled with contextual considerations and meanings. Taken together, the findings show that approaching digital organizing and online care networks as always embedded within larger offline contexts and sociocultural power structures allows for a holistic understanding of the complexities of crisis management and community action in a digitally mediated world, lessons to understand this crisis and the next.