1921
Volume s1-10, Issue 4
  • ISSN: 0002-9637
  • E-ISSN: 1476-1645
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Abstract

Summary

  • 1.  In vitro experiments made to test for possible germicidal action of the gastro-intestinal secretions of on and were negative.
  • 2.  In vivo experiments to determine the length of life of , and within the gastro-intestinal canal of show that these organisms survived for at least twenty-four hours but that they could not be demonstrated after an interval of seven or more days.
  • 3.  It seems probable that does not regurgitate its midgut contents while feeding.
  • 4.  Since no germicidal action could be demonstrated in the gastro-intestinal fluids of in vitro, it seems probable that the organisms ingested by the mosquito were not killed as a result of the presence of an active bactericidal principle but they either failed to find a suitable environment for continued development within the insect and were slowly digested, or that they were eliminated with the feces.
  • 5.  The disappearance of the organisms tested from the gastrointestinal tract of within a short interval of time suggests that the only way in which these organisms could be transferred to the skin of man would be by interrupted feedings repeated at frequent intervals.

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/content/journals/10.4269/ajtmh.1930.s1-10.237
1930-07-01
2017-09-20
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