1. 2009 Pandemic H1N1 Influenza Epidemiology April 2009 – January 2010 Preliminary

2. Source: Massachusetts Immunization Program

3. Laboratory-Confirmed Influenza Cases and Influenza-Like Illness Massachusetts, October 4, 2009 – January 21, 2010 Source: Massachusetts Immunization Program BID Office of Surveillance and Informatics Services

4. Percentage of Influenza-Like Illness Visits Reported by Sentinel Provider Sites - Massachusetts Source: Massachusetts Immunization Program

5. novel 2009-H1N1 DUB – 30 DEC 2009 Data are provisional and will not be officially released by the CDC until 1100 EDT Internal Use Only (FIUO)---For Official Use Only (FOUO) -Sensitive But Unclassified (SBU) - NOT FOR FURTHER DISTRIBUTION Epidemiology/Surveillance ILINet Cumulative Number of Standard Deviations Above Non Influenza Season Mean – H1N1Both Waves April 26 – December 13, 2009

6. Source: Massachusetts Immunization Program N = 389

7. Source: Massachusetts Immunization Program

9. MDPH MassCHIP 2005 Population Estimates N = 389

10. Source: Massachusetts Immunization Program N = 389

11. Source: Massachusetts Immunization Program MDPH MassCHIP 2005 Population Estimates N = 1959

12. Source: Massachusetts Immunization Program MDPH MassCHIP 2005 Population Estimates N = 389

13. Source: Massachusetts Immunization Program MDPH MassCHIP 2005 Population Estimates Death proportions based on 2007 data – MDPH Registry of Vital Statistics N = 30

14. Source: Massachusetts Immunization Program MDPH MassCHIP 2005 Population Estimates

15. Source: Massachusetts Immunization Program MDPH MassCHIP 2005 Population Estimates

16. Source: Massachusetts Immunization Program MDPH MassCHIP 2005 Population Estimates Death proportions based on 2007 data – MDPH Registry of Vital Statistics

17. Source: Massachusetts Immunization Program MDPH MassCHIP 2005 Population Estimates

18. Source: Massachusetts Immunization Program

19. novel 2009-H1N1 DUB – 30 DEC 2009 Data are provisional and will not be officially released by the CDC until 1100 EDT Internal Use Only (FIUO)---For Official Use Only (FOUO) -Sensitive But Unclassified (SBU) - NOT FOR FURTHER DISTRIBUTION Epidemiology/Surveillance Proportion of Adults Immune from Natural Infection and Proportion with Natural and Vaccine Induced Immunity by State December 13, 2009

20. novel 2009-H1N1 DUB – 30 DEC 2009 Data are provisional and will not be officially released by the CDC until 1100 EDT Internal Use Only (FIUO)---For Official Use Only (FOUO) -Sensitive But Unclassified (SBU) - NOT FOR FURTHER DISTRIBUTION Epidemiology/Surveillance Proportion of Adult Population Immune by Natural Infection and Vaccination