DANGER OF MILD CASES 169 



Step 8.— LETTER WARNING MEDICAL MEN NOT TO 

 OVERLOOK THE MILD TYPE OF YELLOW FEVER 

 WHICH MAY BE FOUND IN THE NATIVE BORN 



New Ori.eaxS;, La., 



Avgu.st 17, 1905 



Deaii Doctok, 



In the consistent campaign we are now waging 

 throughout the city against the fever, we want to enlist 

 your hearty assistance. 



You have shown up to now a uniform activity, and 

 if some of tlie work ah-eady accomphshed begins to 

 show some little improvement, we feel it is greatly 

 due to your co-operation. This, though, is a crucial 

 moment, and you must keep up reporting all your cases 

 with unfailing promptness, TJie native horn rvill wi- 

 douhtedly begin to he affected, and xvill .s'/iotc the Uglitest 

 and mildest types of the disease ; it is specially with 

 regard to these that tve rvish to xvarn you, for it is as 

 important to the success of the work heing done by the 

 U.S.P.H. and Marine Hospital Service, that the mild 

 cases he reported as well as the marked cases. These 

 must he screened as carefully as others. 



One stegomyia infected, in the first three days from 

 such a case, can produce a number of serious and c\e\\ 

 fatal cases. The means employed are being systematised 

 and rendered less objectionable daily by the service, so 

 let us endure a little inconvenience for the welfare 

 of all. 



Beware of the so-called immunisation or acclimatisa- 

 tion fever, and report these cases as promptly and 

 rigidly as if they were perfectly characteristic, so that 

 the authorities will be able to give them the same 



SANITARY TREATMENT. 



