id	author	title	date	pages	extension	mime	words	sentences	flesch	summary	cache	txt
cord-348847-53s19r16	Lu, T.	Internet Search Patterns Reveal Clinical Course of Disease Progression for COVID-19 and Predict Pandemic Spread in 32 Countries	2020-05-06		.txt	text/plain	3701	197	55	We found that Internet search patterns reveal a robust temporal pattern of disease progression for COVID-19: Initial symptoms of fever, dry cough, sore throat and chills are followed by shortness of breath an average of 5.22 days [95% CI 3.30-7.14] after symptom onset, matching the precise clinical course reported in the medical literature. We conducted a detailed global study across 32 countries on six continents to determine whether Internet search patterns can provide reliable real-time indicators of local COVID-19 spread, and whether these data can reveal the clinical progression of COVID-19. Figure 1 shows search volumes for the terms "fever" and "dry cough", alongside reported COVID-19 cases and deaths for China, Iran, Italy, United States and India. Figure 4a shows the ensemble average search volumes for "fever", "cough", "dry cough" and "shortness of breath", indexed by searches for "coronavirus symptoms", alongside reported COVID-19 cases and deaths.	./cache/cord-348847-53s19r16.txt	./txt/cord-348847-53s19r16.txt