6 Questions
What is the name of the syndrome caused by HIV infection?
Acquired Immunodeficiency Syndrome
What is the diameter of the HIV virus?
120 nm
What is the main target of the HIV virus in the immune system?
T-cells
In which bodily fluids can HIV be found?
Blood, semen, and vaginal secretion
How many copies of the viral protein p24 are found in the HIV virus?
2,000
Approximately how many people were living with HIV/AIDS worldwide at the end of 2016?
36.7 million
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
This quiz covers the definition, causative agent, epidemiology, pathogenicity, mode of transmission, signs and symptoms, and management of HIV infection, which leads to Acquired Immunodeficiency Syndrome (AIDS).
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