Table 2 Joinpoint trend analysis of SFTS incidence per 100,000 people in Japan, by bimonthly seasons, 2013–2022.
2013 | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | Average APC (95% CI) | |
|---|---|---|---|---|---|---|---|---|---|---|---|
January–February | 0.000 | 0.001 | 0.001 | 0.002 | 0.000 | 0.000 | 0.001 | 0.003 | 0.004 | 0.003 | 25.4* (7.5–68.7) |
March–April | 0.008 | 0.005 | 0.002 | 0.003 | 0.002 | 0.006 | 0.009 | 0.006 | 0.019 | 0.014 | 9.9* (2.9–27.8) |
May–June | 0.009 | 0.015 | 0.020 | 0.019 | 0.029 | 0.025 | 0.025 | 0.018 | 0.030 | 0.037 | 10.1* (4.2–17.1) |
July–August | 0.011 | 0.014 | 0.012 | 0.008 | 0.026 | 0.016 | 0.021 | 0.013 | 0.019 | 0.019 | 5.1 (−2.1–13.3) |
September–October | 0.004 | 0.010 | 0.009 | 0.013 | 0.011 | 0.012 | 0.020 | 0.017 | 0.014 | 0.018 | 10.1* (2.7–19.8) |
November–December | 0.005 | 0.003 | 0.005 | 0.002 | 0.002 | 0.002 | 0.004 | 0.005 | 0.001 | 0.003 | −4.2 (−17.3–9.1) |
