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GCSE Biology Paper 1
Infectious Diseases
Measles and HIV
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Sophia Robinson
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Cards (19)
What should you be able to describe by the end of the video?
Causes and symptoms of
measles
and
HIV
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What are viruses classified as?
Pathogens
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Can viruses be killed by antibiotics?
No
,
they cannot be
killed
by
antibiotics
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What are the key facts about measles?
Highly infectious
disease
First symptom:
fever
Develops
red skin rash
after
three days
Spread through
droplets
from coughs or sneezes
Can cause
serious complications
Most
children
are
vaccinated
against it
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What is the first symptom of measles?
A
fever
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How is measles spread?
Through
droplets
when an
infected
person coughs
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What can complications from measles damage?
The
breathing system
and the
brain
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Why are most children vaccinated against measles?
To prevent serious
complications
and
fatalities
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What are the key facts about HIV?
First symptom:
flu-like
illness
Immune system
becomes
severely
damaged over time
Late stage HIV leads to
AIDS
Patients can contract other infections like
TB
Treated with
antiretroviral
drugs
Not a cure,
lifelong
treatment required
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What is the first symptom of HIV?
A
flu-like
illness
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What happens to the immune system over time with HIV?
It becomes severely
damaged
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What infections can a severely damaged immune system not fight off?
Other infections like
TB
and
cancer
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What do antiretroviral drugs do for HIV patients?
Stop
the
virus
from
multiplying
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Can patients who take antiretroviral drugs develop AIDS?
No
,
they
do
not
develop
AIDS
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How is HIV transmitted?
Through
exchange
of fluids between humans
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What is one way HIV can be spread?
Unprotected
sexual
intercourse
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Why can sharing infected needles spread HIV?
Blood containing HIV passes in the
needle
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Where can you find more questions on measles and HIV?
In the
vision
workbook
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What is the importance of learning about measles and HIV?
To understand their
causes
and
symptoms
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