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Volume 13, Number 5—May 2007


Trends for Influenza-related Deaths during Pandemic and Epidemic Seasons, Italy, 1969–2001

Caterina Rizzo*†Comments to Author , Antonino Bella*, Cécile Viboud‡, Lone Simonsen‡, Mark A. Miller‡, Maria Cristina Rota*, Stefania Salmaso*, and Marta Luisa Ciofi degli Atti*
Author affiliations: *Istituto Superiore di Sanità, Rome, Italy; †University of Bari, Bari, Italy; ‡National Institutes of Health, Bethesda, Maryland, USA;

Main Article

Table 1

Mean age-standardized excess all-cause deaths per 100,000 population and percent increase in death rates and the winter seasonal percent increase attributable to influenza, Italy, 1969–2001*

Pandemic season (1969–1970)
Percent increase21.721.025.9
Epidemic seasons (1970–2001)
Percent increase3.43.65.1
Entire study period (1969–2001)
Percent increase4.04.15.7

*95% confidence intervals for individual season estimates were within 6% of values listed.

Main Article