Dengue virus is transmitted to people from mosquito.
Dengue virus is transmitted from mosquito to people.

What is the difference between these two sentences?


1 Answer 1


There is almost no difference. To tells of the person/thing that has caught the virus. From tells of the person/thing from which the virus infection originates. In other words, to is all about the target, whereas from is all about the source of the virus/infection. Whether you begin with to or from could be just a matter of style, or it could be a matter of importance, as when the reader is expected to be more interested in the source of the infection than in those who are likely to be infected:

Two people and three cows have been found dead in an area in the countryside. Autopsy has shown a deadly virus was the cause of death. The virus is known to be transmitted from mosquitos to both humans and animals.

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