76 Appendix A. 



(Reduced from original) 



CIRCULAR OF INFORMATION 



IN REGARD TO THE 



Notification and flicroscopical Diagnosis of 

 Malarial Fever, 



It is the earnest desire of the Department of Health to acquire all possible 

 information as to the occurrence and distribution of malaria in New York City, with 

 a view to its eventual stamping out. 



As this can only be done v/ith the co-operation of the medical profession, all 

 physicians are hereby requested to notify the Department of Health of all cases of 

 malarial fever coming under their observation. Too great stress can not be laid 

 upon the statement that it is not the desire or the intention of the Department to 

 interfere in any way with the patients. They will only be visited with the consent of 

 the attending physician. 



Information is desired regarding the location of malarial fever in New York 

 City, so that as far as possible proper measures may be taken to correct the un- 

 sanitary conditions which produce it 



Malaria, as far as we know, is always transmitted by means of the bites of 

 certain mosquitoes (Anopheles). 



These mosquitoes can be comparatively easily located and identified, and their 

 breeding places fo^und. 



In the majority of instances the occurrence of a case of malariaf fever in a given 

 locality means the existence of a breeding place of the Anopheles mosquito close 

 at band. 



Recognizing the above facts, it is the intention of the Department to investigate 

 every case of malaria occurring in New York City, with reference to the source of 

 infection — i. e., the breeding places of the mosquito. These discovered and de- 

 stroyed, it is hoped that not only will the number of cases of malaria be greatly 

 decreased, but also the spread of the disease from one section of the city to another 

 be prevented. Malaria is common in the outlying sections of the city, and the 

 excavations going on in the various Boroughs afford excellent starting points for 

 local epidemics of the disease. 



