Volume 54, Issue 2
  • ISSN: 0002-9637
  • E-ISSN: 1476-1645



Reintroduction of Rift Valley fever (RVF) into Egypt in 1993 raised concerns about the potential for Egyptian mosquitoes to transmit the virus. We evaluated the ability of , and collected in the Aswan area and collected in the Nile Delta to transmit RVF virus. All mosquito species tested were susceptible to RVF virus infection, with and being the most sensitive to infection. However, none of 12 , including 10 with a disseminated infection, transmitted RVF virus by bite. In contrast, nearly all (87%, n = 15) and (90%, n = 10) with a disseminated infection transmitted virus. Overall transmission rates for mosquitoes exposed to hamsters with a viremia ≥ 10 plaque-forming units/ml were , 20% (n = 5); , 7% (n = 102); , 7% (n = 30); , 11% (n = 9); and , 0% (n = 7). Based on abundance, susceptibility to infection, ability to transmit virus, and feeding behavior, appeared to be the most efficient vector of the Egyptian mosquitoes evaluated. While less susceptible than , and were also potential vectors during this RVF outbreak in Egypt.


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