The state or period of an infectious agent, such as a virus or bacterium, living or developing in a host without producing clinical symptoms. As related to HIV infection: Although infected individuals usually exhibit a period of clinical latency with little evidence of disease, the virus is never truly latent. Even early in the disease, HIV is active within lymphoid organs where large amounts of virus become trapped in the FDC network. Surrounding germinal centers are areas rich in CD4+ T cells. These cells increasingly become infected and viral particles accumulate both in infected cells and as free virus. See also CD4 (T4) or CD4+ Cells; Lymphoid Organs.
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