and with insect vectors.

其中昆虫为病媒
Diseases could now be seen

疾病现在可以看做
to be part of a much more complicated process,

一个更复杂的过程中的一部分
and with complicated life forms.

并具有着复杂的生命形式
Then there was, following this,

在此之后
the establishment of the mosquito theory of transmission for malaria,

蚊子传播疟疾的理论
which took place during the end of the decade of the 1890s,

在十九世纪的最后一个十年
with two figures,

由另外两位科学家建立
who were working independently of each other,

而这两位都是单独发现的
but in 1898 established that malaria was a parasitical disease,

但1898年又认定疟疾是寄生性疾病
transmitted by certain species of mosquitoes.

被特定种类的蚊子传播
So, malaria--which is a disease

所以疟疾具有决定性的意义