Volume s1-22, Issue 5
  • ISSN: 0002-9637
  • E-ISSN: 1476-1645


Conclusions and Summary

Eleven out of one hundred wild rats trapped in Philadelphia were proven to be carriers of capable of producing symptoms typical of leptospirosis infection in guinea-pigs.

A comparison of the percentage efficiency of the various methods employed to detect infection in the rat materials showed that the darkfield examination of the rat urine was 18.1 per cent; the culture of the urine was 36.6 per cent; the darkfield of the rat kidney emulsion was 18.1 per cent and the culture of the kidney emulsion was 90.0 per cent efficient when compared with the inoculation of albino guinea pigs. Therefore it is suggested that guinea-pig inoculations with rat kidney substance should always be made whenever leptospiral infection is to be investigated in wild rats.


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  • Received : 23 Mar 1942
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