Because of mosquitos
The yellow fever virus is found mainly in Africa and South America.
nYellow fever is found only in Africa and South America.
yellow fever only attacks in places like south Africa and some places in southern America yellow fever has only once attacked America in 1793 when mosquitoes from the Caribbeanyellow fever only attacks in places like south Africa and some places in southern America yellow fever has only once attacked America in 1793 when mosquitoes from the Caribbean
It is found in tropical and subtropical areas in South America and Africa.
Each year you have over 200,000 people affected by yellow fever. Almost 30,000 people die due to yellow fever each year. It is common in tropical Africa and South America.
Type your answer here... Yellow fever is found only in parts of South America and Africa. People get yellow fever from the bite of an infected female mosquito. The mosquito injects the yellow fever virus into the bite. Symptoms start 3 to 6 days after being bitten by an infected mosquito. Yellow fever is diagnosed by a blood test.
south American and africa
Yellow fever is presently endemic to tropical and subtropical areas in South America and Africa (both old and new worlds).However, the origin of the disease is most likely to be Africa, from where it was introduced to South America through the slave trade in the 16th century.It is therefore an Old World disease.
You only need one if you start or pass through a yellow fever endemic area such as central Africa or parts of Central America. See the related link for more information.
At a tour he was taking in south America
In India and Africa mosquito bites can cause Malaria, Filaria, and Dengue, Rift valley fever, and also Yellow fever more common in Africa and South America. Infected mosquitoes when they bite humans they transmit the parasite or virus to humans to infect them.
Yellow fever is commonly found in tropical areas. The United States eradicated it by getting rid of mosquito breeding areas and putting screens on houses in the places it existed.