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Human Immunodeficiency Virus
Transcript of Human Immunodeficiency Virus
WHAT IS HIV?
"HIV" stands for Human Immunodeficiency Virus. HIV belongs to a group of viruses called retroviruses. Retroviruses are viruses that insert DNA into the host cell to replicate. HIV attacks your T-cells and CD4 cells which are white blood cells that help fight infection & disease.
Components of structure
The capsid is made up of the protein p24.
• The viral core which is the HIV's genetic material consisting of two identical strands of RNA.
The viral envelope which contains two layers of lipids
• The HIV matrix proteins are in between the envelope and capsid.
How does the HIV virus assemble?
HIV uses reverse transcriptase to make a double stranded DNA inside the host cell. Lysogenic cycle begins. The host cell now replicates with the pro virus. The pro virus leaves the chromosome starting the lytic cycle. The viral proteins and nucleic acids are made. When the viruses are assembled, they kill the host cell.
Stages of HIV virus?
Acute primary infection: Develop symptoms such as muscle soreness, headaches, and fevers.
Symptomatic HIV infection: The virus becomes causes the immune system to weaken. This include symptoms such as rapid weight loss, memory loss, and diarrhea
HIV to AIDS (8-11 years): The immune is severely damaged. This can possibly lead to death.
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Transmission & Prevention
Sharing injection needles
Can be passed down to offspring
Sharing body fluids
By: Ditue Paul & Ohidur Rahman