Viruses maintain chronic persistence and evade immune clearance through several mechanisms, including preventing the expression of viral antigens on the host cell surface, directly altering host immune cells, restricting viral gene expression, and rapidly mutating viral antigens.

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A chronic viral infection is a type of persistent infection characterized by symptoms that are recurrent or persistent over a long period because the host's immune system is unable to eliminate the virus.

Chronic Viral Infection

https://openstax.org/details/books/microbiology/

Microbiology covers the scope and sequence requirements for a single-semester microbiology course for non-majors. The book presents the core concepts of microbiology with a focus on applications for careers in allied health. The pedagogical features of the text make the material interesting and accessible while maintaining the career-application focus and scientific rigor inherent in the subject matter. Microbiology’s art program enhances students’ understanding of concepts through clear and effective illustrations, diagrams, and photographs.

Microbiology is produced through a collaborative publishing agreement between OpenStax and the American Society for Microbiology Press. The book aligns with the curriculum guidelines of the American Society for Microbiology.

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