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Slide 1

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The Progression of HIV/AIDS
· Most infectious diseases follow a
similar pattern.
· You are exposed to a pathogen.
· The pathogen replicates in your
body and you feel ill.
· Your immune system produces
antibodies to the pathogen.
· The pathogens are destroyed ­
and you feel better again…read more

Slide 2

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HIV/AIDS is not like this
· There are four stages in the progression of
the disease from the initial infection to full
blown AIDS.
· The cells which are attacked by the virus
are the cells of the immune system itself,
so your body cannot overcome the
pathogen and its effects.…read more

Slide 3

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The stages of HIV/AIDS
1. Acute HIV syndrome
· Appears 3-12 weeks after you
have become infected.
· Some people feel unwell ­
symptoms include fevers,
headaches, tiredness, and
swollen glands, but not
everyone infected with HIV
feels ill.
· HIV antibodies appear in your
blood - you become HIV
positive…read more

Slide 4

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The stages of HIV/AIDS
2. Asymptomatic disease
No symptoms ­ so individual may be unaware
that they are HIV positive.
· The HIV positive individual can
infect other people in this stage
· This stage may last from 10
years (HIV-1) up to 20 years
· The virus replicates rapidly,
infecting the CD4 T-cells of the
immune system.…read more

Slide 5

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The stages of HIV/AIDS
3. Symptomatic disease
Patients begin to suffer
HIV-related clinical
symptoms ­ weight
loss, fatigue,
diarrhoea, night
sweats and infections
such as thrush…read more

Slide 6

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The stages of HIV/AIDS
4. Advanced AIDS
CD4 T-cells numbers fall; virus load climbs.
Symptoms can include:
· Severe weight loss.
· Dementia as brain cells become
· Cancers, eg Karposi's sarcoma.
· Infections such as TB and
cryptococcal meningitis.
· The final stage of advanced AIDS
is always death.…read more


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