Yellow fever is a virus contracted through mosquito bites, which is commonly found in South America, Central America, and Africa. When visiting these areas be sure to use insect repellent even when wearing clothes because mosquitos have the ability to bite through thin fabrics. Another way to prevent infection is to get inoculated before traveling. Currently, the yellow fever vaccine is a single injection that consists of a living strain of the virus that has been weakened. Before traveling, it is a good idea to check the CDC website or ask your doctor what vaccinations are recommended and if any are required.
There is no cure for the virus. If you contract it, you will need to treat the symptoms with rest, fluids, and pain relievers. Here is a list of signs and symptoms to be on the lookout if you have traveled to a country in the affected parts of the world.
Normal internal body temperatures can fluctuate from person to person. Temperature can also increase due to activity. Typically, 98.6 degrees Fahrenheit, measured orally is considered normal. When a person’s internal temperature rises, the muscles contract making the person feel cold. Some studies suggest that the body increases its temperature in an effort to disrupt and hinder the growth of an invading pathogen, such as the yellow fever virus.
Once the virus has been subdued, the body will return to normal temperature. The person will start feeling hot and will break a sweat. Hyperpyrexia is when the body reaches an unsafe temperature of 106.7 degrees Fahrenheit. This amount of internal heat is considered a medical emergency and you should seek medical attention if you are approaching it.