Surveillance sans frontières: Internet-based emerging infectious disease intelligence and the HealthMap project

Brownstein, J. S., Freifeld, C. C., Reis, B. Y., & Mandl, K. D. (2008, July). Surveillance sans frontières: Internet-based emerging infectious disease intelligence and the HealthMap project. PLoS Medicine. https://doi.org/10.1371/journal.pmed.0050151