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Questions and Answers
What is the name of the syndrome caused by HIV infection?
What is the name of the syndrome caused by HIV infection?
- Immune Deficiency Reaction
- Autoimmune Deficiency Syndrome
- Human Immunodeficiency Syndrome
- Acquired Immunodeficiency Syndrome (correct)
What is the diameter of the HIV virus?
What is the diameter of the HIV virus?
- 150 nm
- 200 nm
- 120 nm (correct)
- 100 nm
What is the main target of the HIV virus in the immune system?
What is the main target of the HIV virus in the immune system?
- B-cells
- T-cells (correct)
- Dendritic cells
- Macrophages
In which bodily fluids can HIV be found?
In which bodily fluids can HIV be found?
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How many copies of the viral protein p24 are found in the HIV virus?
How many copies of the viral protein p24 are found in the HIV virus?
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Approximately how many people were living with HIV/AIDS worldwide at the end of 2016?
Approximately how many people were living with HIV/AIDS worldwide at the end of 2016?
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Study Notes
HIV Infection
- HIV (Human Immunodeficiency Virus) leads to AIDS (Acquired Immunodeficiency Syndrome)
Causative Agent
- HIV is an RNA retrovirus that attacks T-cells (CD-4 cells) in the immune system, interfering with immune response
- HIV is found in the blood and bodily fluids (semen, vaginal secretion, breast milk) of infected humans of all ages
Structure
- HIV belongs to the retrovirus family
- The virus is spherical, approximately 120 nm in diameter
- Composed of three main layers: Envelope, Viral Matrix, and Core
- The virus contains two copies of positive single-stranded RNA, enclosed by a capsid composed of 2,000 copies of the viral protein p24
Epidemiology
- Approximately 36.7 million people worldwide lived with HIV/AIDS at the end of 2016
- 2.1 million of those infected were children
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