1. “Avian influenza: A new pandemic threat?”;Trampuz;Mayo Clinical Procedures,April 2004
2. “Information about influenza pandemics,” Department of Health and Human Services, Centers for Disease Control and Prevention http://www.cdc.gov/flu/avian/gen-info/pandemics.htm
3. “Pandemic influenza, academic health center University of Minnesota,” Center for Infectious Disease Research and Policy (CIDRAP) http://www.cidrap.umn.edu/cidrap/content/influenza/panflu/biofacts/panflu.htm
4. “Recent changes in influenza epidemiology and vaccination recommendations,”;Zimmerman;The Journal of Family Practice,January 2005
5. Appendix 2, “Glossary of terms, influenza pandemic contingency plan,” Health Protection Agency February 2005 47