Vilain, Pascal, Luce Menudier, and Laurent Filleul. “Twitter: A Complementary Tool to Monitor Seasonal Influenza Epidemic in France?”. Online Journal of Public Health Informatics 11, no. 1 (May 30, 2019). Accessed April 19, 2024. https://ojphi.org/ojs/index.php/ojphi/article/view/9724.