Components extraction and total variance explained.

(XLSX)</p

Sensitivity analysis of the association between tropical cyclones and DF incidence on lag 5–14 days by using principal component analysis (PCA).

(TIF)</p

Association between tropical cyclones and risk of DF incidence by intensity grades on lag 5–14 days in the PRD during the study period.

Association between tropical cyclones and risk of DF incidence by intensity grades on lag 5–14 days in the PRD during the study period.</p

Correlation of tropical cyclone intensities and meteorological variables.

TC: tropical cyclone intensities; AT: average temperature; MaT: maximum temperature; MiT: minimum temperature; RF: average precipitation; AWV: average wind velocity; MaWV: maximum wind velocity; EWV: extreme wind velocity; AAP: average air pressure; MaAP: maximum air pressure; MiAP: minimum air pressure; AVP: average vapor pressure; ARH: average relative humidity; MiRH: minimum relative humidity.</p

Daily precipitation and number of DF cases in study periods of each tropical cyclone in the PRD from 2013 to 2018.

(PDF)</p

Location of the study area in China.

The base layer of the map is from Resource and Environment Science and Data Center (http://www.resdc.cn/data.aspx?DATAID=201).</p

The number of DF cases during study periods in the PRD from 2013 to 2018.

The number of DF cases during study periods in the PRD from 2013 to 2018.</p

Sensitivity analysis of the association between tropical cyclones and DF incidence on lag 5–14 days by changing meteorological variables.

Model I: original model; Model II: excluding RF; Model III: excluding EWV. (TIF)</p

Basic information of tropical cyclones affecting the PRD from 2013–2018.

Basic information of tropical cyclones affecting the PRD from 2013–2018.</p

Association between tropical cyclones and risk of DF incidence on lag 5–14 days in the PRD during the study period among population subgroups.

A: impact of tropical storms on DF by sex; B: impact of typhoons on DF by sex; C: impact of tropical storms on DF by age-groups; D: impact of typhoons on DF by age-groups.</p