Illustration of antigenic shift in influenza virus

Description

This diagram illustrates the reassortment of genetic material that enables a flu strain to jump from one animal species to another, including humans. This is called “antigenic shift.”

Credit

Public domain/ National Institute of Allergy and Infectious Diseases/ Links Studio, Illustrator/ 2011

Source

http://www.niaid.nih.gov/topics/flu/research/basic/pages/antigenicshiftillustration.aspx