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Yellow fever.pptx
- 1. Menu © Community, Environmental & Occupational Medicine .Dept, ASU, 2013
VECTOR-BORNE DISEASES
- 2. Menu © Community, Environmental & Occupational Medicine .Dept, ASU, 2013
ILOs
By the end of this lecture, you should be able
to:
• Identify modes of transmission of Yellow fever
• Identify epidemiology of the disease
• Identify preventive measures
- 8. Identification
Infectious
agent
Epidemiology
Reservoir
Mode of
transmission
Incubation
Period
Period of
communicability
Susceptibility
& resistance
Prevention &
Control
Glossary Summary
Menu Quiz
© Community, Environmental & Occupational Medicine .Dept, ASU, 2013
Epidemiology
• In Africa, sylvan yellow fever is endemic in Angola, Zaire, Zambia,
Tanzania, Uganda, Kenya and South Sudan.
• In the Americas, the disease is reported in Northern South America and
Amazon basin.
• No cases reported in Asia, Europe, North America and Australia.
Yellow Fever
Epidemiology
- 16. Identification
Infectious
agent
Epidemiology
Reservoir
Mode of
transmission
Incubation
Period
Period of
communicability
Susceptibility
& resistance
Prevention &
Control
Glossary Summary
Menu Quiz
© Community, Environmental & Occupational Medicine .Dept, ASU, 2013
Prevention &
Control
Yellow Fever
Prevention & Control
1. Prevention
A. General measures:
• Control of Aedes aegypti in urban yellow fever.
• Protective clothes, bed nets and repellent are advised for
persons not immunized and work in forests.
• Aircrafts leaving an infected area to receptive area should
be disinfected
• Quarantine measures for imported monkeys at receptive
areas.
• Periodic spraying of airports and surrounding receptive
areas.
- 17. Identification
Infectious
agent
Epidemiology
Reservoir
Mode of
transmission
Incubation
Period
Period of
communicability
Susceptibility
& resistance
Prevention &
Control
Glossary Summary
Menu Quiz
© Community, Environmental & Occupational Medicine .Dept, ASU, 2013
Prevention &
Control
Yellow Fever
Prevention & Control
1. Prevention
B. Specific measures: by active immunization
• A single S.C. injection of a 17 D vaccine containing viable
attenuated yellow fever 17 D strain virus.
• Validity of the vaccine: begins after 10 days and persists for at least
10 years. During this period of validation no cases have been
reported.
• Indications:
– Travelers to endemic areas or between endemic and receptive
areas.
– Those who work in jungles.
– Resident of endemic areas.