Here we describe the epidemiological pattern for these respiratory viruses detected by DFA in 10 ' 629 nasopharyngeal aspirates collected from 8 ' 285 patients during a 12-year period ( 1998 ) ( 1999 ) ( 2000 ) ( 2001 ) ( 2002 ) ( 2003 ) ( 2004 ) ( 2005 ) ( 2006 ) ( 2007 ) ( 2008 ) ( 2009 ) ( 2010 ).