is it necessary to get the shot to visit the following countries:
I won't be going to the jungle really. If it's not required, I'll probably pass and just take my chances. If it's required I'll probably pass and take my chances.
Yellow fever begins suddenly after an incubation period of three to five days in the human body. In mild cases only fever and headache may be present.
Within 24 hours about 15% develop a more severe form, in which they enter the "toxic phase" characterized by fever, chills, bleeding into the skin, paradoxically slow heartbeat, headache, back pains, and extreme prostration. Nausea, vomiting, and constipation are common. Jaundice usually appears on the second or third day.
After the third day the symptoms recede, only to return with increased severity in the final stage, during which there is a marked tendency to hemorrhage internally; the characteristic “coffee ground� vomitus contains blood. The patient then lapses into delirium and coma, followed by death in about 50% of those who enter the toxic phase.