First 252 words of the document:
By Niki Nubi
How it is transmitted
Normal symptoms HIV-related symptoms
· Via sexual contact. Fever Weight loss
· Through infected blood, through intravenous drug use.
· From a mother to a foetus, during birth or through
Swollen glands Low-grade infections
breastfeeding. Night sweats
· Education programmes
· Less promiscuous sex
· Use of condoms
· Use of clean needles
Stages of infection
· Stage 1: ACUTE HIV SYNDROME
o Experience symptoms in the first few weeks
o HIV antibodies appear in the blood 3-12 weeks after infection
Cause of AIDS
· Stage 2: ASYMPTOMATIC STAGE
o All symptoms disappear · HIV binds to CD4 receptors on the T helper cells and infects them.
o The virus replicates, infecting CD4 T helper cells. · HIV takes over the host DNA and replicates.
o Secondary infections develop · When the new virus leaves the host cell, it is destroyed.
· Stage 3: SYMPTOMATIC DISEASE · T killer cells destroy some of the heavily infected T helper cells.
o Immune system starts to fail · The number of T helper cells decreases so macrophages and T killer cells
o T helper cell count falls rapidly aren't activated. The T helper cells can't function properly.
o Patients suffer HIV-related symptoms
· Increased vulnerability to secondary infections.
· Stage 4: ADVANCED AIDS
o Severe symptoms appear (weight loss, dementia, cancers, TB)
· Final Stage: DEATH