QUININIZATION 167 



quinine at all times as a preventive measure. In the pine swamps 

 and along the coasts of Florida malaria is practically absent on 

 account of the effectiveness of screening necessitated by the 

 abundance of non-malarial mosquitoes. Three to five grains of 

 quinine daily, or ten to fifteen grains once a week, is an almost 

 certain malaria preventive. Quinine, however, is apt to cause 

 abortion in pregnant women, though less so than is a severe 

 attack of malaria. Some people are naturally very susceptible 

 to quinine and cannot take it; such people should carefully 

 avoid malarial districts. Tea, coffee and other mild stimulants 

 are also said to be beneficial, but the safest course is always the 

 same quinine. 



