Yellow fever In 1873, Shreveport, Louisiana lost 759 citizens in an 80-day period to a Yellow fever epidemic, with over 400 additional victims eventually succumbing. The total death toll from August through November was approximately 1,200, In 1878, about 20,000 people died in a widespread epidemic in the Mississippi River Valley. That year, Memphis had an unusually large amount of rain, which led to an increase in the mosquito population. The result was a huge epidemic of yellow fever. The steamship "John D. Porter" took people fleeing Memphis northward in hopes of escaping the disease, but passengers were not allowed to disembark
Yellow fever now states that a single dose of vaccination is sufficient to confer lifelong immunity against yellow fever disease." The attenuated live vaccine stem 17D was developed in 1937 by Max Theiler. The World Health Organization (WHO) recommends routine vaccinations for people living in affected areas between the 9th and 12th month after birth. Up to one in four people experience fever, aches, and local soreness and redness at the site of injection. In rare cases (less than one in 200,000 to 300,000), the vaccination can cause yellow fever vaccine-associated viscerotropic disease, which is fatal in 60% of cases. It is