Table 1 Questionnaire contents

(1) Close family members

(2) Other relatives, and friends

(3) Community publicity

(4) Medical staff

(5) Television or radio

(6) Magazines or newspapers

(7) Poster leaflets

(8) The Internet

(9) Official WeChat accounts

(1) Dengue fever is transmitted by mosquitoes

(2) Fever is a symptom of dengue fever

(3) Headache is a symptom of dengue fever

(4) Arthralgia is a symptom of dengue fever

(5) Rash is a symptom of dengue fever

(6) Bleeding is a symptom of dengue fever

(7) Fatigue is a symptom of dengue fever

(8) Mosquito larvae live in water

(1) Use of mosquito repellent

(2) Use of mosquito nets

(3) Screening for doors and windows

(4) Use of insecticides

(5) Use of mosquito coils

(6) Wearing long-sleeved clothing and trousers

(7) Removing indoor and outdoor garbage and water

(8) Removing shrubs and weeds from around the place of residence

(9) Water storage