15 Supplemental Digital Content 1: Dates for periods of at least local influenza virus
circulation in Georgia by season (seasonal and H1N1) and periods after local activity before the start of the next putative influenza season.
Season Non-Putative Influenza period
Period of at least local influenza activity
2002-2003 Jun 1- Sep 30# Oct 1 - Apr 26
2003-2004 Apr 27 - Sep 30 Nov 8 - Jan 21
2004-2005 Jan 22 - Sep 30 Jan 15 - Mar 31
2005-2006 Apr 1 - Sep 30 Dec 22 - Apr 14
2006-2007 Apr 14 - Sep 30 Nov 8 - Apr 7
2007-2008 Apr 8 - Sep 30 Jan 1 - Apr 14
2008-2009 Apr 15 - Sep 30 Jan 22 - Mar 21
2009-2010 Mar 22 - Apr 28 Apr 29 - Sep 30*
Oct 1 - Apr 14+
2010-2011 Apr 15 - Sep 30 Nov 8 - Dec 31
*H1N1 virus circulation
+H1N1 and seasonal virus circulation
#Circulation activity was not recorded prior to the 2002-2003 season, so the non-putative season was assumed to start June 1.
