TRICHINOSIS — SCHWARTZ 433 



had an infection sufficient to have been productive of symptoms, 

 the infections in the remaining 356 positive hogs being apparently 

 of the nonclinical type, as far as can be judged by the data presented 

 in this paper. 



The control of trichina infection in swine and the ultimate eradi- 

 cation of this disease from these host animals involve improved live- 

 stock sanitation on farms, the elimination of meat from the scrap 

 barrel, the control of rats, burning or deep burial in quicklime of 

 animals that die on the farm, and an adequate diet for swine to pre- 

 vent the development of a capricious appetite. Since the feeding to 

 hogs of garbage as collected appears to be the main source of trichina 

 infection, garbage fed to swine should be cooked to kill trichinae 

 that may be present in scraps of pork in the garbage. Garbage that 

 is definitely known to contain no meat or bones need not be cooked. 

 The sale, by cities and towns, of uncooked garbage for the feeding 

 of hogs is a dangerous procedure and should be discontinued in the 

 interest of the livestock industry and as a public health measure. 



Since human beings acquire trichinosis as a result of eating raw 

 or inadequately cooked pork or inadequately cooked or processed 

 meat food products containing pork muscle tissue, a comprehensive 

 campaign to educate the public regarding the danger of acquiring 

 trichinosis from the sources mentioned should be undertaken by pub- 

 lic health officials, teachers, nurses, and others engaged in educational 

 work. Public health officials should regulate the operation of gar- 

 bage-feeding establishments so as to prohibit the feeding to swine of 

 garbage that has not been properly cooked, unless the garbage is 

 known not to contain meat scraps and bones. 



REFERENCES 



1. Leidy, J. 



1846. [EntozoQn in the superficial part of the extensor muscles of the 

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2. Leidt, J. 



1866. [Remarks on trichina.] (Secretary's abstract.) Proc. Acad. Nat. 

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3. Hilton, J. 



1833. Notes on a peculiar appearance observed in human muscle, proba- 

 bly depending upon the formation of very small cysticerci. Lou- 

 don Med. Gaz., vol. 11, No. 270, p. 60.5. 



4. Owen, R. 



1835. Description of a microscopic entozoon infesting the muscles of 

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1895. Traits de zoologie m^dicale et agricole. 2d ed. Paris. 



6. Leuckart, R. 



1876. Die menschlichen Parasiten und die von ihnen herrfihrenden 

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