Chain of infection

In a chain of infection what is this?

• Susceptible host

• Reservoir

• Infection agent

• Mode of transmission

In a chain of infection what is this?

• Susceptible host

• Reservoir

• Infection agent

• Mode of transmission

In a chain of infection what is this?

• Susceptible host

• Reservoir

• Infection agent

• Mode of transmission

In a chain of infection what is this?

• Susceptible host

• Reservoir

• Infection agent

• Mode of transmission

• portal of exit

In a chain of infection what is this?

• Susceptible host

• Reservoir

• Infection agent

• portal of entry

• portal of exit

In a chain of infection what is this?

• Susceptible host

• Reservoir

• Infection agent

• portal of entry

• portal of exit

In a chain of infection what is this?

• Susceptible host

• Reservoir

• Infection agent

• portal of entry

• portal of exit

When it extends internationally or globally

• Epidemic

• pandemic

• outbreak

If it occurs with many people within a country

• Epidemic

• pandemic

• outbreak

when a disease occurs more frequently than expected

• Epidemic

• pandemic

• outbreak