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College of Veterinary Medicine


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Infection Dynamics


Transmission Dynamics and Spread of Infections

Epidemiology is concerned with the evolution of a disease in a population of animals more than with the course of that disease in a population, i.e. on its dynamics, in its duration, on what proportion of the animals will be affected are the modes by which disease agents are transmitted from animal to animal and by which they spread within a population.

Development of Infection (Infectious Disease Processes)

Six essential factors:

1. An agent must be present
2. There must be a source or reservoir for the infectious agent
3. Mode of escape from b.
4. Mode of transmission - factors that bring the new susceptible host
5. and an agent must be present
6. There next must be a new susceptible host (at risk).









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