Leveraging the social networks of informal healthcare providers for universal health coverage: insights from the Indian Sundarbans.

India's healthcare landscape is characterized by a multitude of public and private healthcare providers, yet its health systems remain weak in many areas. Informal healthcare providers (IHPs) bridge this gap, particularly in rural India, and are deeply embedded within local communities. While their importance is widely recognized, there is a knowledge gap regarding the specifics of their social networks with actors in health systems. The aim of this study was to map the social networks of IHPs to elucidate the type and nature of their relationships, in order to explore opportunities for intersectoral collaboration to achieve universal health coverage (UHC). We have adopted the social network analysis (SNA) approach using qualitative ego-network methodology to evaluate the types and strengths of ties in the Indian Sundarbans. A total of 34 IHPs participated in the study. Qualitative data were analysed using NVivo10 and Kumu.io was used to visualize the social networks. Results show that the 34 IHPs had a total of 1362 ties with diverse actors, spanning the government, private sector and community. The majority of the ties were strong, with various motivating factors underpinning the relationships. Most of these ties were active and have continued for over a decade. The robust presence of IHPs in the Indian Sundarbans is attributable to the numerous, strong and often mutually beneficial ties. The findings suggest a need to reconsider the engagement of IHPs within formal health systems. Rather than isolation, a nuanced approach is required based on intersectoral collaboration capitalizing on these social ties with other actors to achieve UHC in impoverished and underserved regions globally.