Fig 6. Dengue estimation by tweets model at city level.

Time series with observed Dengue cases (black lines), tweets data (blue bars), model fitted Dengue cases (red lines) and 95% confidence interval (red dashed lines) at city level. (A) Belo Horizonte (r = 0.93, r² = 90.3); (B) Fortaleza (r = 0.41, r² = 90.0); (C) Manaus (r = 0.78, r² = 83.5); (D) Porto Alegre (r = 0.71, r² = 76.1); (E) Rio de Janeiro (r = 0.80, r² = 82.6); and (F) São Paulo (r = 0.47, r² = 89.0).