Yellow Fever

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What are the Symptoms of Yellow Fever?

Symptoms of yellow fever include high fever, chills, headache, muscle aches, vomiting and backache.

Symptoms of yellow fever usually develop after 3 - 6 days following a mosquito bite.

There are two stages of the illness-

► Acute phase
► Toxic phase

The first, ‘acute’, phase usually causes-

► Fever
► Muscle pain
► Backache
► Headache
► Chills
► Loss of appetite
► Nausea
► Vomiting

Most of the patients improve and their symptoms disappear after 3-4 days.

However, 15% patients enter a second, toxic phase within 24 hours of the initial remission. Several organs are affected in this stage, including the heart, liver and kidney.

Symptoms include-

► High fever
► Jaundice
► Abdominal pain with vomiting
► Bleeding from the mouth, nose, eyes or stomach
► Blood in the vomit and feces
► Deterioration of kidney function

50% patients who enter the toxic phase die within 10-14 days, the rest recover without significant organ damage.

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