Under investigation - A case which has been notified but information is not yet available to classify it as probable or confirmed.

Probable - A clinically compatible illness in a person who has come from an endemic area.

Confirmed - A clinically compatible illness that is laboratory confirmed.

Not a case - A case that has been shown not to meet the case definition.

For more information refer to the Arboviral diseases section of the Communicable Disease Control Manual.

Yellow Fever

Under investigation - A case that has been notified but information is not yet available to classify it as probable or confirmed (must have travelled to Africa and/or South America).

Suspected - Any person who has visited or travelled in a yellow fever endemic area who presents with acute onset of fever, with jaundice appearing within 14 days of onset of the first symptoms.

Probable - A clinically compatible illness that meets the WHO definition of a probable case (requires laboratory testing).

Confirmed - A clinically compatible illness that meets the WHO definition of a confirmed case (requires laboratory testing).

Not a case - A case that has been investigated and subsequently found not to meet the case definition.

For more information refer to the Yellow fever section of the Communicable Disease Control Manual.