A Study of the Concentration of Yellow Fever Virus which Will Infect Certain Species of Aedes Mosquitoes

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Summary

  1. 1.A study was made of the concentration of virus which was necessary to infect certain species of Aedes mosquitoes with yellow fever.
  2. 2.The lowest titer at which transmission by bite occurred was 10-3.0.
  3. 3.Half or more than half of the mosquitoes, which fed on primates circulating yellow fever virus at titers of 10-5.0 or above, became infected after extrinsic incubation periods of at least 28 days at 28°C.

Author Notes

Members Field Staff, International Health Division, Rockefeller Foundation, 49 West 49th St., New York 20, N. Y.

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