Epidemiology, Influenza and Pandemics Flashcards

1
Q

Describe Epidemiology

A

Study of how often diseases occur in different groups of people and why

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2
Q

What study types are useful in Epidemiology?

A

1) Ecological

2) Cross-Sectional

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3
Q

How many types of influenza are there?

A

A: Infections in pigs, cats, horses, birds, sea mammals, -> Severe, extensive outbreaks
B: Prone to mutation, seen in children and less severe outbreaks
C: Minor disease with mild or no symptoms

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4
Q

How is influenza transmitted?

A

Through aerosols via coughs and colds

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5
Q

What is antigenic drift?

A

Spontaneous mutation that leads to a minor change (Epidemic)

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6
Q

What is antigenic shift?

A

Emergence of a new subtype difference to previous viral form (Pandemic)

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