6.2 Cause of Death (Transmission of TB and HIV) Flashcards

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1
Q

What are pathogens?

A

Bacteria and viruses that cause diseases

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2
Q

How is Mycobacterium Tuberculosis carried?

A

Droplets of mucus and saliva

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3
Q

How can it be released in the air? What is this type of infection called?

A

When an infected person talks.
Others can inhale the droplets.
Droplet infection.

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4
Q

How long can the droplets be suspended for?

A

Several hours in poorly ventilated areas.

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5
Q

How can risk be increased?

A

Close contact with infected person increases risk of developing the disease.
Poor health.
Poor diet.
Overcrowding conditions.

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6
Q

How long can the HIV virus survive?

A

Not a tough virus and cannot survive outside the body for a significant amount of time.

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7
Q

How is HIV passed on?

A

Only in body fluids: Blood vaginal secretions, semen (not saliva or urine).
Body fluids have to be transferred directly into the body.

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8
Q

Transmission

A
  1. Sharing needles.
  2. Unprotected sex.
  3. Blood-to-blood transfer through cuts and grazes.
  4. Maternal transmission from mother to unborn child or in breast milk.
    OR lesions caused by other infections (STRS)
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