dengai and anophilis mosquitois aedes egypti mosquitos
mosquito
Mosquitoes
Malaria and Yellow Fever killed most workers.
yes
I will take a guess but it is not a wild one. I believe the answer is disease and more specifically, malaria.
Malaria, yellow fever
There were normal dangers of construction. They had heavy machinery moving about, the danger of large mud and dirt slides caving in on them. One big difficulty was malaria. Many workers died of yellow fever.
mosquito
Malaria and Yellow Fever.
malaria and yellow fever
Yellow fever & malaria.
Malaria and Yellow Fever.