IGCSE Biology 7 Views 1 Answers
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Sourav PanNovember 15, 2024

State that human immunodeficiency virus (HIV) is a pathogen that causes an STI

State that human immunodeficiency virus (HIV) is a pathogen that causes an STI

Sourav Pan
Sourav PanNovember 15, 2024

Answered step-by-step

Human immunodeficiency virus (HIV) is a pathogen that causes a sexually transmitted infection (STI). It is primarily transmitted through sexual contact, where the virus is present in bodily fluids such as blood, semen, vaginal fluids, and breast milk. HIV attacks the body’s immune system, specifically targeting CD4 cells, which are crucial for immune function. If left untreated, HIV can lead to acquired immunodeficiency syndrome (AIDS), a condition characterized by severe immune system damage and increased susceptibility to opportunistic infections and certain cancers.
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