2t- Challenges in treatment and control Flashcards

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1
Q

What is epidemiology?

A

The study of the outbreak and spread of infectious disease

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2
Q

What is the herd immunity threshold?

A

The density of resistant hosts in the population required to prevent an epidemic

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3
Q

What do vaccines do?

A

They contain antigens that will illicit an immune response

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4
Q

What are challenges in controlling parasites?

A
  • some parasites are difficult to culture in the lab which makes it difficult to produce vaccines
  • rapid antigenic variation has to be reflected in the design of vaccines
  • similarities between host and parasite metabolisms makes it difficult to only target the parasite
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5
Q

What are conditions that promote transmission?

A
  • overcrowding

- tropical conditions

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6
Q

Where can overcrowding occur?

A
  • refugee camps that result from war or natural disaster

- rapidly growing cities in LEDCs

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7
Q

What can overcrowding and tropical climates also make difficut?

A

Making co-ordinated treatment and control programs successful

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8
Q

What can be done to improve parasite control?

A

Civil engineering projects to improve sanitation combined with co-ordinated vector control

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9
Q

What can improvements in parasite control lead to?

A
  • a reduction in child mortality

- population wide improvements in child development and intelligence

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