Volume s1-8, Issue 4
  • ISSN: 0002-9637
  • E-ISSN: 1476-1645



Attempts were made to transmit yellow fever with seven different species of mosquitoes, viz., and with the following results:

  • 1.  and transmitted this disease in all respects in the same manner as .
  • 2.  Two lots of were allowed to feed on infected monkeys. One of these lots produced typical infection when later fed on normal monkeys; the mosquitoes of the other lot failed to convey the virus through bite, but proved infective when macerated and injected into a normal monkey twenty-four days after their original infecting feed.
  • 3.  Attempts to transmit the disease with gave entirely negative results, both by biting experiments as well as by the injection of the bodies of these mosquitoes into normal monkeys at various intervals after they were fed on infected animals.
  • 4.  and failed to feed on infected monkeys, and the question as to whether these insects are capable of transmitting yellow fever could not be determined.
  • 5.  The pathological findings in the monkeys which died after being bitten by and were typical of yellow fever, and the virus was apparently not modified or its virulence attenuated by the passage through these mosquitoes.


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