TY - JOUR T1 - H1n1 and seasonal flu: The “new” flu and the “old” flu Y1 - 2010/11/01 N1 - 10.1001/archpediatrics.2010.209 JO - Archives of Pediatrics & Adolescent Medicine SP - 1076 EP - 1076 VL - 164 IS - 11 N2 - The flu (influenza) is a contagious respiratory illness caused by flu viruses. It can cause mild to severe illness, and at times it can lead to death. SN - 1072-4710 M3 - doi: 10.1001/archpediatrics.2010.209 UR - http://dx.doi.org/10.1001/archpediatrics.2010.209 ER -