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



  • 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.


Article metrics loading...

The graphs shown below represent data from March 2017
Loading full text...

Full text loading...

This is a required field
Please enter a valid email address
Approval was a Success
Invalid data
An Error Occurred
Approval was partially successful, following selected items could not be processed due to error