Weekly flu surveillance reports 2011 Week 52 (12/25-12/31) Week 51 (12/18-12/24) Week 50 (12/11-12/17) Week 49 (12/4-12/10) Week 48 (11/27-12/3) Week 47 (11/20-11/26) Week 46 (11/13-11/19) Week 45 (11/6-11/12) Week 44 (10/30-11/5) Week 43 (10/23-10/29) Week 42 (10/16-10/22) Week 41 (10-9-10/15) Week 40(10/2-10/8) 2012 Week 20 (5/13-5/19) Week 19 (5/06-5/12) Week 18 (4/29-5/05) Week 17 (4/22-4/28) Week 16 (4/15-4/21) Week 15 (4/8-4/14) Week 14 (4/1-4/7) Week 13 (3/25-3/31) Week 12 (3/18-3/24) Week 11 (3/11-3/17) Week 10 (3/4-3/10) Week 9 (2/26-3/3) Week 8 (2/19-2/25) Week 7 (2/12-2/18) Week 6 (2/5-2/11) Week 5 (1/29-2/4) Week 4 (1/22-1/28) Week 3 (1/15-1/22) Week 2 (1/8-1/14) Week 1 (1/1-1/7)