The Disease Yellow Fever
Throughout history many different diseases have infected the world. Such diseases consist of measles, mumps, malaria, typhus and yellow fever. Many of these diseases are caused by different things and originated in different countries.
Yellow fever is a deadly disease caused by a viral infection that is transmitted through the bite of an infected mosquito. Although it is found to be most common in males in their early 20's, yellow fever can affect any sex, race, or age. Since yellow fever is carried by mosquitoes, it is most often found in areas such as Central America, the northern half of South America, and Central Africa where mosquitoes are abundant. The reason why it is found so often in these regions is because they are very close to the equatorial line, and are there for hot, moist, tropical environs.
Yellow fever is also found in other areas besides the ones listed above. It can also be carried throughout South America and all of Africa. Even though it can be carried to these places it is more often than not confined to areas surrounding the equator because mosquitoes have short life spans and yellow fever can be contracted and spread all year long in these tropical regions. In certain places, such as North America, yellow fever has been totally eliminated and the government suggests vaccination for the disease if a citizen is leaving the country.
There are many symptoms of yellow fever and they vary depending on the severity of the disease. Some of the symptoms are basically normal and would not lead the sufferer to believe that something was seriously wrong. The first symptoms, fever, headache, nausea, and backache are common and appear soon after a patient has contracted this disease, but as stated they are also the same symptoms of the common cold or flu. In most case these symptoms may take anywhere from three to six days to be seen after the infection has occurred. As the disease progresses the pulse slows and weakens, bleeding of the gums, and bloody urine occur. In more severe, usually fatal cases, jaundice occurs, which is what the disease is named for. Jaundice is when the patient's skin turns yellow and is the final definitive test to detect yellow fever, although by that stage it is usually too late. In the rare cases where people recover from the disease, the person develops an immunity to the...