... 2008 2009 2010 2011 2012 2013 2014 2015. Incidence rate. Report year. § Cultureâindependent cases include those that are detected from a specimen using a cultureâindependent diagnostic test (CIDT). Page 4 of 6. DC_ComDis_Yearly-trends-of-culture-confirmed-and-cuture-independent-infections-by-disease.pdf.