trade brought an influx of disease,
particularly malaria and yellow fever, to the Caribbean.
The arriving Europeans brought slave
to the new lands. Malaria and yellow fever
were already rampant in Africa. Years of exposure in Africa
rendered a great number of the incoming slaves immune to the two
diseases, while others were carrier for the diseases.
The spread of these two deadly diseases is done by mosquito.
Malaria was spread by the Anopheles
mosquito and yellow fever was spread by the Aedes aegypti
mosquito. Mosquitoes would
ingest blood from one human who was a carrier of the disease and
pass the virus to another human. The presence of mosquitos to
transmit the diseases, combined with a reservoir of infected
humans, assured that people in these areas would be exposed to the
While the Africans were genetically protected the Europeans
were not. Many Europeans living in the
new lands would contract the diseases and die. The resistance of
Africans to these diseases, which allowed them to survive and work
in infested areas where Europeans couldn't, ironically increased
their usefulness there and caused increased slave trade. The
introduction of these two diseases into the Caribbean changed the
ethnic make up of the area.