Skip directly to site content Skip directly to page options Skip directly to A-Z link Skip directly to A-Z link Skip directly to A-Z link
Volume 19, Number 1—January 2013

Novel Framework for Assessing Epidemiologic Effects of Influenza Epidemics and Pandemics

Carrie ReedComments to Author , Matthew Biggerstaff, Lyn Finelli, Lisa M. Koonin, Denise Beauvais, Amra Uzicanin, Andrew Plummer, Joe Bresee, Stephen C. Redd, and Daniel B. Jernigan

 Author affiliation: Centers for Disease Control and Prevention, Atlanta, Georgia, USA

Main Article

Table 3

Indicators of severity and transmissibility from the 2009 influenza (H1N1) pandemic and the corresponding assessment scale


Clinical severity

Symptomatic case-fatality ratio, %

0.02 2

Symptomatic case-hospitalization ratio, %

0.05 2

Ratio, deaths: hospitalization, %

4.7 2




Household secondary attack rate, 
 symptomatic, %

13 3

Symptomatic attack rate, community, %

20 3

Peak % visits for influenza-like illness

7 3

R0: basic reproductive no.

1.4 3



Main Article

Page created: December 20, 2012
Page updated: December 20, 2012
Page reviewed: December 20, 2012
The conclusions, findings, and opinions expressed by authors contributing to this journal do not necessarily reflect the official position of the U.S. Department of Health and Human Services, the Public Health Service, the Centers for Disease Control and Prevention, or the authors' affiliated institutions. Use of trade names is for identification only and does not imply endorsement by any of the groups named above.