Challenges in treatment and control

Question 1

What is epidemiology

Answer 1

The study of the outbreak and spread of infectious disease

Question 2

What is the herd immunity threshold

Answer 2

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

Question 3

What do vaccines contain

Answer 3

Antigens that will elicit an immune response

Question 4

What makes it difficult to find drug components

Answer 4

The similarities between host and parasite metabolism makes it difficult to find drug compounds that only target the parasite

Question 5

What has to be reflected in the design of vaccines

Answer 5

Antigen variation

Question 6

What makes it difficult to design vaccines

Answer 6

Some parasites are difficult to culture in the laboratory making it difficult to design vaccines

Question 7

What challenges arise as a result of tropical environments and overcrowding

Answer 7

Parasites spread more rapidly

Question 8

Where can overcrowding occur

Answer 8

Overcrowding occur in refugee camps that result from war or natural disasters or rapidly growing cities in LEDCs. These conditions make it difficult to co-ordinate treatment and control programs

Question 9

What is being used to improve sanitation

Answer 9

Civil engineering projects combined with co-ordinated vector control may often be the only practical control strategies

Question 10

What happens when parasite control improves

Answer 10

Reduces child mortality
Results in population wide improvements in child development and intelligence
Individuals have more resources for growth and development.