Document Detail

Trichinella spiralis in an agricultural ecosystem: transmission in the rat population.
MedLine Citation:
PMID:  2352066     Owner:  NLM     Status:  MEDLINE    
Four hundred forty-three Norway rats (Rattus norvegicus) were examined to determine their role in the transmission and maintenance of Trichinella spiralis on a pig farm. Rats, classified by sex and weight, were examined for trichinellosis by peptic digestion of muscle samples. Over a 25-mo period, 188 (42.4%) rats were found to be infected with T. spiralis. The mean intensity of infection was 293.2 larvae per gram (LPG) of muscle; 65 (34.6%) infected rats had intensities of infection greater than 100 LPG. Even in the absence of a known source of infected meat (garbage containing meat scraps or dead animals), the rat population maintained the infection, probably through cannibalism. Population reduction was an effective method for reducing the prevalence of infection within the rat population. Therefore, to reduce the likelihood of transmission of T. spiralis between rats and swine, it is essential that rat populations in a farmyard environment be controlled.
D A Leiby; C H Duffy; K D Murrell; G A Schad
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't; Research Support, U.S. Gov't, Non-P.H.S.    
Journal Detail:
Title:  The Journal of parasitology     Volume:  76     ISSN:  0022-3395     ISO Abbreviation:  J. Parasitol.     Publication Date:  1990 Jun 
Date Detail:
Created Date:  1990-07-16     Completed Date:  1990-07-16     Revised Date:  2009-11-19    
Medline Journal Info:
Nlm Unique ID:  7803124     Medline TA:  J Parasitol     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  360-4     Citation Subset:  IM    
Department of Pathobiology, School of Veterinary Medicine, University of Pennsylvania, Philadelphia 19104.
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MeSH Terms
Disease Reservoirs
Muscles / parasitology
Rats / parasitology*
Rodent Diseases / epidemiology,  transmission*
Sex Factors
Trichinella / isolation & purification
Trichinellosis / epidemiology,  transmission,  veterinary*

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