11:709:255 Lecture Notes - Lecture 16: Pre-Ejaculate, Blood Transfusion, Subtypes Of Hiv
27 Jan 2020
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Document Summary
Hiv = human immunodeficiency virus: a virus that targets host immune cells (cd4 cells) and turns them into viral factories for hiv reproduction. Aids = acquired immunodeficiency syndrome: a symptomatic condition resulting from. Hiv, making the individual vulnerable to opportunistic infections that cause disability (including malnutrition and other chronic diseases) or death. Hiv transmission: direct contact with infected body fluids blood, semen, pre-seminal fluid, vaginal fluid, breast milk (not saliva, tears, or urine: 1. Hiv is a retrovirus virus that carries rna rather than dna which is transcribed before integration into host cell dna where virus reproduces. Two forms of hiv: hiv-1: most common and rapid, seen in us, hiv-2: seen in western africa. Hiv invades genes of cd4 cells (t-helper lymphocytes) progressive depletion of cd4 cells immunodeficiency. Rapid replication 1 billion to 1 trillion virions/day. Reduction in cd4 cell counts (particularly in gi tract) Strong relationship between low cd4 counts, increased viral load, and progression to.
