I. Overview of disease
A. Basic Information
1. Causes
a) Yellow Fever virus transferred by mosquitoes to humans
b) Since 1974 only one genetic type can still be identified
c) Transmitted between monkeys and mosquitoes and then from mosquitoes to humans.
2. Symptoms
a) Incubates in body for 3-6 days before symptoms occur
b) 2 disease phases
(1) "acute" (1st phase)- is characterized by fever, muscle pain, headache, shivers, nausea, vomiting, and loss of appetite.
(2) "toxic stage"- 15% of patients. This phase can lead to kidney failure and 20-50% will die. The rest will live with minor complications.