Viremia

Definition

Viremia is the presence of viruses in the bloodstream, which allows them to be spread throughout the body. It can lead to systemic infections and is a crucial step in the pathogenesis of many viral diseases.

5 Must Know Facts For Your Next Test

1. Viremia can be primary (initial spread from the site of infection) or secondary (spread after replication at secondary sites).
2. It plays a pivotal role in the dissemination of viruses to target organs and tissues.
3. The level of viremia often correlates with disease severity and can be used as a marker for infection progression.
4. Detection methods include PCR, viral culture, and serological assays.
5. Persistent viremia can result in chronic infections or immune system evasion by the virus.

Review Questions

• What is viremia and how does it contribute to viral pathogenesis?
• Differentiate between primary and secondary viremia.
• Which methods are commonly used to detect viremia in patients?

Related terms

Virulence Factors: Molecules produced by pathogens that contribute to their ability to cause disease.

Bacteremia: The presence of bacteria in the bloodstream, potentially leading to sepsis.

Septicemia: A serious bloodstream infection that can lead to sepsis, often caused by bacteria.