Yellow fever is a viral disease transmitted primarily by mosquitoes, particularly the Aedes aegypti species. Here’s a comprehensive overview:

Overview

• Causative Agent: The yellow fever virus, a member of the Flavivirus genus.
• Transmission: Primarily through the bites of infected mosquitoes. It can also spread through exposure to infected body fluids and tissues, although this is less common.

Symptoms

Initial Phase (3 to 6 days after infection)

1. Fever: Sudden onset of high fever.
2. Chills: Feeling cold and shivering.
3. Loss of Appetite: Decreased desire to eat.
4. Muscle Pain: Generalized aches and pains.
5. Headache: Severe headaches.
6. Nausea and Vomiting: Upset stomach and vomiting may occur.

Toxic Phase (occurs in about 15% of cases)

This phase can develop after the initial phase and can be severe: read more