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Figure 9.1. Percentage of people having antibodies to the three subtypes of influenza A virus stratified by year of birth.

Figure 9.1

Percentage of people having antibodies to the three subtypes of influenza A virus stratified by year of birth. The strains labeled A/strain designation (subtype) were used to test for antibodies to a particular subtype by measuring the degree to which blood samples carried antibodies that reacted significantly against the test strain. Figures were taken from Dowdle (1999), with permission from WHO. Original data for the top panel from Masurel (1976, with permission from Elsevier Science) and for the bottom panel from Masurel (1969, with permission from WHO).

From: Chapter 9, Immunological Variability of Hosts

Cover of Immunology and Evolution of Infectious Disease
Immunology and Evolution of Infectious Disease.
Frank SA.
Princeton (NJ): Princeton University Press; 2002.
Copyright © 2002, Steven A Frank.

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