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[키워드] Algorithm Anxiety average calculated Central nervous system change changed changes in condition correlated correlation coughing COVID-19 COVID-19 case COVID-19 pandemic death deaths Depression determine disorder ENhance fatigue fluctuation Frequency health conditions help identify Impact individual Infectious disease Influenza information infoveillance media medical condition Medical conditions mental health natural language processing objective offer Pain pandemic Pearson correlation coefficient Population Positive predictive value public health public health surveillance real time Result sensitivity significantly social media statistically significant study period Surveillance Symptom Symptoms the United State The United States these symptom weight loss
[DOI] 10.2196/29413 PMC 바로가기 [Article Type] Original Paper