Year | Period 1 (week) | WPC (95% CI) | Period 2 (week) | WPC (95% CI) | Period 3 (week) | WPC (95% CI) | Period 4 (week) | WPC (95% CI) | |
---|---|---|---|---|---|---|---|---|---|
Google Trends | 2018 | 1–18 | -2.6 (-5.0 – 0.0) | 19–35 | 10.7a (8.2 – 13.3) | 36–42 | -12.9a (-19.9 – -5.4) | 43–52 | -4 (-9.9 – 2.4) |
Sentinel surveillance | 2018 | 9–21 | -3.6a (-6.1 – -1.0) | 22–36 | 16.4a (14.6 – 18.2) | 37–44 | -17.8a (-20.7 – -14.8) | 45–52 | -0.5 (-5.6 – 4.8) |
Google Trends | 2019 | 1–24 | -0.2 (-1.9 – 1.6) | 25–36 | 17.0a (13.1 – 21.0) | 37–41 | -21.9a (-31.6 – -10.8) | 42–52 | -6.3a (-1.2 – -2.5) |
Sentinel surveillance | 2019 | 1–24 | -1.4 (-3.1 – 0.4) | 25–36 | 21.6a (17.8 – 25.6) | 37–46 | -18.1a (-21.2 – -14.8) | 47–52 | 2.6 (-11.5 – 18.8) |
Google Trends | 2020 | 1–9 | 5.2 (-0.1 – 10.8) | 10–23 | -12.8a (-16.1 – -9.3) | 24–45 | 6.0a (3.6 – 8.4) | 46–53 | -8.2 (-16.9 – 1.5) |
Sentinel surveillance | 2020 | 1–9 | 0 (-2.6 – 2.8) | 10–23 | -23.7a (-26.9 – -20.4) | 24–40 | 17.1a (12.8 – 21.6) | 41–53 | 1.7 (-1.1 – 4.5) |
Google Trends | 2021 | 1–10 | 9.6a (0.9 – 19.0) | 11–26 | 18.2a (15.9 – 20.5) | 27–38 | -21.6a (-24.0 – -19.2) | 39–45 | -1.9 (-16.5 – -15.3) |
Sentinel surveillance | 2021 | 1–14 | 16.8a (12.6 – 21.1) | 15–17 | 3.7 (-29.1 – 51.6) | 18–27 | 16.6a (13.8 – 19.5) | 28–44 | -16.4 (18.8 – -14.0) |