Trichince in Pigs 355 



severe soreness of the muscles, associated with fever. 

 During this stage, the young trichina are migrating, 

 working their way through the tissues of the body. In 

 general, it has been said that the symptoms of trichi- 

 nosis in man are those of "rheumatism, associated with 

 typhoid fever." The disease has never been recognized 

 by any symptoms shown by pigs. Pigs do not die of 

 trichinosis. The worms can be found in the muscular 

 tissue by making a microscopical examination. In ex- 

 amining the carcasses of pigs for trichina, specimens 

 of lean meat should be taken from the deeper muscles 

 of the neck, inner face of the shoulder, "midriff" or 

 diaphragm, tenderloin, or the base of the tongue, as 

 the parasites are most frequent in these regions. Esti- 

 mates as to the prevalence of trichinosis in pigs varies 

 from two to ten per cent. Pigs that are kept in un- 

 sanitary or filthy quarters and fed upon offal are more 

 frequently diseased. There is no remedy. Pork or ham 

 should never be eaten without a most thorough cooking. 





