Figure 4

Trends in HFRS incidence and mortality rates from 2004 to 2017. Trend for the incidence rate of HFRS from 2004 to 2017 as calculated by Joinpoint regression analysis. (1) The annual incidence rate decreased by 38% every year from 2004 to 2007 (p < 0.05). From 2007 to 2013, the annual incidence increased by 9.5% (p > 0.05). From 2013 to 2017, the incidence rate decreased by 10.2% per year (p > 0.05). (2) From 2004 to 2017, the annual mortality rate decreased by 7.3% (p < 0.05).