USA HISTORY

Detailed explanation-1: -Yellow fever is an acute viral haemorrhagic disease transmitted by infected mosquitoes. The “yellow” in the name refers to the jaundice that affects some patients. Symptoms of yellow fever include fever, headache, jaundice, muscle pain, nausea, vomiting and fatigue.

Detailed explanation-2: -Yellow fever appeared in the U.S. in the late 17th century. The deadly virus continued to strike cities, mostly eastern seaports and Gulf Coast cities, for the next two hundred years, killing hundreds, sometimes thousands in a single summer.

Detailed explanation-3: -The yellow fever virus most likely originated in Africa and arrived in the Western Hemisphere in the 1600s as a result of slave trade. The mosquito vector was likely introduced to the U.S. via water barrels on trade ships arriving from countries with endemic yellow fever.

Detailed explanation-4: -The virus that causes yellow fever is passed to humans through the bites of infected mosquitoes. The mosquitoes that spread the infection are usually active and bite during daylight hours, and are found in both urban and rural areas. Yellow fever can’t be passed directly from person to person through close contact.