SD Health Department - H1N1 Surveillance

Week 13 flu surveillance (week ending April 3, 2010) - The official reporting period for the 2009-2010 flu season, including both seasonal and H1N1 flu, began August 31, 2009. The numbers included in the reports at this site are cumulative from that date forward. Prior to the 2009-2010 flu season, South Dakota reported a total of 121 lab-confirmed cases of H1N1 flu, 3 hospitalizations and 0 deaths.

NOTE: seasonal surveillance is not intended to count individual flu cases, but instead to monitor activity levels and trends and virus characteristics as part of a nationwide surveillance system.

Previous weekly surveillance reports

Week 12 (week ending March 27, 2010)
Week 11 (week ending March 20, 2010)
Week 10 (week ending March 13, 2010)
Week 9 (week ending March 6, 2010)
Week 8 (week ending February 27, 2010)
Week 7 (week ending February 20, 2010)
Week 6 (week ending February 13, 2010)
Week 5 (week ending February 6, 2010)
Week 4 (week ending January 30, 2010)
Week 3 (week ending January 23, 2010)
Week 2 (week ending January 16, 2010)
Week 1 (week ending January 9, 2010)
Week 52 (week ending January 2, 2010)
Week 51 (week ending December 26, 2009)
Week 50 (week ending December 19, 2009)
Week 49 (week ending December 12, 2009)
Week 48 (week ending December 5, 2009)
Week 47 (week ending November 28, 2009)
Week 46 ( week ending November 21, 2009)
Week 45 (week ending November 14, 2009)
Week 44 (week ending November 7, 2009)
Week 43 (week ending October 31, 2009)
Week 42 (week ending October 24, 2009)
Week 41 (week ending October 16, 2009)
Week 40 (week ending October 10, 2009)
Week 39 (week ending October 3, 2009)
Week 38 (week ending September 26, 2009)
Week 37 (week ending September 19, 2009)
Week 36 (week ending September 12, 2009)
Week 35 (week ending September 5, 2009)

National updates - Centers for Disease Control and Prevention

International updates - World Health Organization