. Preventive medicine and hygiene. s well as in experimental animals, even whengiven 24 hours after the ingestion of the poison. It has recentlybeen prepared for distribution at the Institute for Infectious Diseasesat Berlin. Prevention.—Prevention of botulism consists in gTeater care andcleanliness in the handling and preservation of nitrogenous spores may remain on sausage casings and afterwards germinate inthe sausage and thus produce toxin. There is no danger of this poisonin fresh foods, or in foods preserved a long time, if properly sterilizedin the can or properly refrige
. Preventive medicine and hygiene. s well as in experimental animals, even whengiven 24 hours after the ingestion of the poison. It has recentlybeen prepared for distribution at the Institute for Infectious Diseasesat Berlin. Prevention.—Prevention of botulism consists in gTeater care andcleanliness in the handling and preservation of nitrogenous spores may remain on sausage casings and afterwards germinate inthe sausage and thus produce toxin. There is no danger of this poisonin fresh foods, or in foods preserved a long time, if properly sterilizedin the can or properly refrigerated. Tlie chief danger is from sausageseaten without cooking. The heat destroys the toxin, but it must be suffi-cient and penetrate throughout the mass; also the cooking must berecent, for the bacillus grows well in cooked foods. When obtainablethe antitoxin may be used as a preventive in cases where a number ofpersons are showing symptoms of poisoning from having partaken of thesame carcass or sausage or other suspected MEAT 629 ANIMAL PARASITES Trichinosis.—Trichinella spiralis, formerly Trichina spiralis, com-monly known as trichina, is a round worm which passes its entire lifecycle in man, rat, or hog. Many other animals, such as mice, foxes,guinea-pigs, rabbits, cats, dogs, etc., are susceptible. This parasite dif-fers from many other animal parasites in affecting several genera andin passing its entire life cycle in each Jiost. Trichinosis is rare m anirmals which do not eat meat. Trichiniasfs (usually called trichinosis) is not a mere medical curi-osity. It is a common and impor-tant disease, readily average mortality is about halfthat of typhoid fever, in some epi-demics, however, rising to 16 or even30 per cent., as in the Hederslebenepidemic ^ in 1865. The parasitesare found in from to 2 per cent,cf all necropsy subjects.^ About 1to 2 per cent, of American swine anda larger per cent, of American rats ? f , -, Fig. 76.—Tbichinella Spi
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Keywords: ., bookauthorwh, bookcentury1900, bookdecade1910, booksubjecthygiene
