Infectious Disease Epidemiology:
Major Differences
• A case can also be an exposure
• Subclinical infections influence epidemiology
• Contact patterns play major role
• Immunity
• There is sometimes a need for urgency
(www)
Epidemiology
• Deals with one population
• Risk ...
Epidemiology of Infectious
Diseases
Course: Infectious Disease
Epidemiology (EPI 522)
Harvard
University
, Infectious Disease Epidemiology:
Major Differences
• A case can also be an exposure
• Subclinical infections influence epidemiology
• Contact patterns play major role
• Immunity
• There is sometimes a need for urgency
(www)
,What is infectious disease epidemiology?
Epidemiology Infectious disease epidemiology
• Deals with one population Two or more populations
• Risk case A case is a risk factor
• Identifies causes The cause often known
(www)
, What is infectious disease epidemiology?
Two or more populations
Humans
Infectious agents
Helminths, bacteria, fungi, protozoa, viruses, prions
Vectors
Mosquito (protozoa-malaria), snails (helminths-schistosomiasis)
Blackfly (microfilaria-onchocerciasis) – bacteria?
Animals
Dogs and sheep/goats – Echinococcus
Mice and ticks – Borrelia
(www)
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