TICK FEVER 



209 



The servants must be instructed not to place the bed- 

 ding on the floor, or the ticks may enter it. Bedding 

 in a district where the tick is common should always be 

 carried in a tin box. These ticks do not readily feed 

 by day and do not attach themselves to persons in 

 movement, therefore there is little risk even in a native 

 hut in the day time, or at night whilst the hut is well 

 lighted and the occupant is awake. 



In the event of a European house or the servants' 

 quarters becoming infected, careful search should be 

 made for the ticks, and the floors and walls abundantly 

 flushed with some disinfectant solution, such as i in 2,000 

 perchloride of mercury solution, or, and better in the case 

 of a native-built house, it should be pulled down and 

 burned. 



VARIETIES. 



Some authorities consider that there are four distinct 

 varieties of relapsing fever. 



Varieties of Relapsing Fever Contrasted. European and 

 American relapsing fever show some differences and 

 may also be due to different species of spirochaetes. The 

 more important, differences are shown in this table : 



