PT - JOURNAL ARTICLE AU - Michele Late TI - Online flu tracking tool receives more than 50,000 surveys: APHA challenge winners announced DP - 2013 Jan 01 TA - The Nation's Health PG - 5--5 VI - 42 IP - 10 4099 - http://www.thenationshealth.org/content/42/10/5.1.short 4100 - http://www.thenationshealth.org/content/42/10/5.1.full SO - Nations Health2013 Jan 01; 42