Antigenic Variation
Antigenic variation is a process whereby an organism or pathogen changes its antigenic composition over time. This mechanism is used by some pathogens, such as viruses or parasites, to evade the immune response of its host. By changing its antigens, the pathogen is able to survive, replicate, and cause disease. Antigenic variation can cause epidemics and pandemics, as the pathogen is able to outpace the host's immune responses and cause severe health problems. Additionally, antigenic variation can complicate the development of effective vaccines and treatments against these pathogens. Therefore, it is an important phenomenon to study in order to develop effective methods to prevent and control infectious diseases.
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