Early Warning and Prediction of Scarlet Fever in China Using the Baidu Search Index and Autoregressive Integrated Moving Average With Explanatory Variable (ARIMAX) Model: Time Series Analysis

Tingyan Luo   ^{1, 2 *} , BSc ;   Jie Zhou   ^{1, 2 *} , MD ;   Jing Yang   ^{1, 2 *} , BSc ;   Yulan Xie   ^{1, 2} , BSc ;   Yiru Wei   ^{1, 2} , BSc ;   Huanzhuo Mai   ^{1, 2} , BSc ;   Dongjia Lu   ^{1, 2} , BSc ;   Yuecong Yang   ^{1, 2} , BSc ;   Ping Cui   ³ , PhD ;   Li Ye   ^{1, 2} , PhD ;   Hao Liang   ^{2, 3} , PhD ;   Jiegang Huang   ^{1, 2, 4} , PhD

¹ School of Public Health, Guangxi Medical University, Nanning, China

² Guangxi Key Laboratory of AIDS Prevention and Treatment, Guangxi Medical University, Nanning, China

³ Life Science Institute, Guangxi Medical University, Nanning, China

⁴ Guangxi Colleges and Universities Key Laboratory of Prevention and Control of Highly Prevalent Disease, Guangxi Medical University, Nanning, China

*these authors contributed equally