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2014 Report of the Institut Pasteur International Network
The 2014 Report of the Institut Pasteur International Network is available online. It presents the main public heath results, some of the research programms, the 4-year Groups Initiative and the international teaching and training programme within the Network.
Culex mosquitoes are experimentally unable to transmit Zika viru
We report that two laboratory colonies of Culex quinquefasciatus and Culex pipiens mosquitoes were experimentally unable to transmit ZIKV either up to 21 days post an infectious blood meal or up to 14 days post intrathoracic inoculation.
Infectious viral particles were detected in bodies, heads or saliva by a plaque forming unit assay on Vero cells. We therefore consider it unlikely that Culex mosquitoes are involved in the rapid spread of ZIKV.
Culex quinquefasciatus from Rio de Janeiro Is not competent to transmit the local Zika virus
The southern house mosquito Cx. quinquefasciatus from Rio de Janeiro was not competent to transmit local strains of ZIKV. Thus, there is no experimental evidence that Cx. Quinquefasciatus likely plays a role in the ZIKV transmission. Consequently, at least in Rio, mosquito control to reduce ZIKV transmission should remain focused on Ae. aegypti.