The statement 'the immune system must attack the body's own cells' makes viral infections difficult to defeat.
<h3>What is an infection?</h3>
Infection is a type of harm that the organism suffers when pathogenic microorganisms and viruses enter the body.
Pathogenic microorganisms include, for example, bacteria, fungi, and virus entities.
These pathogenic microorganisms/entities have specific antigens which can be recognized by the immune system.
Learn more about virus infections here:
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