Table 1.

Summary of weekly Influenza-like Illness count data for the Centers for Disease Control and Prevention, Google, Twitter, and Wikipedia, 2012-2015 influenza seasons.

	Influenza season	CDCa ILINetb	Google	Twitter	Wikipedia
2012-2013
	MMWRc Weeks (counts/week)	33	33	33	33
	Mean	19,049	4121	8096	47,541
	Min	7317	1286	2558	29,865
	Max	39,896	10,555	22,935	114,919
2013-2014
	MMWR Weeks (counts/week)	33	33	33	33
	Mean	16,574	2274	5826	25,039
	Min	9033	1339	1196	17,885
	Max	28,654	5008	10,506	36,935
2014-2015
	MMWR Weeks (counts/week)	34	34	34	34
	Mean	19,940	2549	2900	21,918
	Min	9289	1144	451	12,958
	Max	40,664	6911	8709	35,232

^aCDC: Centers for Disease Control and Prevention.

^bILINet: United States Outpatient Influenza-like Illness Surveillance Network.

^cMMWR: Morbidity and Mortality Weekly Report.