70 N. J. Mosquito Extermination Association 



^ . north and south shore upland field work 



For the purpose of mosquito control on the upland, let m first 

 make a study of malaria. From whatever angle it is viewed, the 

 malaria problem must appeal to any thoughtful person as one of the 

 chief questions in any community where it is prevalent. Health 

 must be considered as one of the main aspects of any place. 



Why it is important? It is important from simply the standpoint 

 of health. Physical preparedness underlies all other preparedness. 

 Malaria is a subtle disease. It constantly lowers the efficiency of the 

 patient, it decreases the resisting power of the system to throw off 

 other disease germs, it enters frequently into complication with other 

 diseases and, at times, makes diagnosis uncertain. 



Why should the presence of malaria be kept secret any more than 

 other diseases? Malaria can be prevented. 



How? By exterminating the Anopheles mosquitoes and keeping 

 their breeding places under control, by organizing a system that 

 will enable the men in charge of the inspection and oiling to get 

 over the territory often. 



The chief engineer must be in constant touch with his men, 

 co-operating with his force at all times, and with but one object in 

 view — mosquito extermination and malaria control. 



In Nassau County we have had a long fight against the Anopheles 

 mosquitoes as our malarial problem has been a serious one. Follow- 

 ing is the record made by the commission since its organization in 

 1916. 



Previous to 1916 the number of malaria cases in four communi- 

 ties was 475 annually. During the year 191 6, the number of case's 

 in these four communities was reduced to only 56; in 1917 to 51. 

 Then in 1918 the automobile transportation was installed and we 

 reduced the number of cases of malaria for the whole county to 5 ; 

 in 1919 to 3. During the year of 1920 the Anopheles mosquitoes 

 were fought to a standstill, although breeding was found in 24 

 communities. The field force worked with untiring efforts to keep 

 malaria out of the county with the satisfying result of no cases of 

 malaria in Nassau last year. 



We are also fighting and exterminating the Aedes and Culex mos- 

 quitoes 'that are found breeding when inspections are made of the 

 upland violations. Following is the percentage of the different kind 

 of breeding found and exterminated on the North and South Shore 

 field work during the year 1920 : 



