Carlson, Sandra J, Craig B Dalton, Michelle T Butler, John Fejsa, Elissa Elvidge, and David N Durrheim. 2013. “Flutracking Weekly Online Community Survey of Influenza-Like Illness Annual Report 2011 and 2012”. Communicable Diseases Intelligence 37 (December):398-406. https://doi.org/10.33321/cdi.2013.37.51.