Significados de malarial districts em inglês

Certain simple precautions suffice to protect persons living in malarial districts from infection:

The French Department of Health distributes annually immense quantities of quinine in the malarial districts.

It is the problem of a semi-tropical climate, the problem of malarial districts, of staple products.

Second: The screening of persons in malarial districts who are suffering from malarial fever, so that mosquitoes may not bite them and thus become infected.