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Alphaviruses are a family of positive-strand RNA viruses that circulate on all continents between mosquito vectors and vertebrate hosts. Despite a significant public health threat, their biology is not sufficiently investigated, and the mechanisms of alphavirus replication and virus–host interaction are insufficiently understood. In this study, we have applied a variety of experimental systems to...
African swine fever virus (ASFV) causes a lethal haemorrhagic disease of pigs. There are conflicting reports on the role of interferon in ASFV infection. We therefore analysed the interaction of ASFV with porcine interferon, in vivo and in vitro. Virulent ASFV induced biologically active IFN in the circulation of pigs from day 3-post infection, whereas low virulent OUR T88/3, which lacks genes from...
Zika virus (ZIKV) is an emerging flavivirus since the first epidemics in South Pacific in 2007. The recent finding that ZIKV is now circulating in Western Hemisphere and can be associated to severe human diseases, warrants the need for its study. Here we evaluate the susceptibility of human lung epithelial A549 cells to South Pacific epidemic strain of ZIKV isolated in 2013. We showed that ZIKV growth...
Arboviruses are a large group of viruses that are transmitted by arthropods including ticks and mosquitoes. The global diversity of arboviruses is unknown; however, theoretical studies have estimated that over 2,000 mosquito-borne flaviviruses may exist. An increasing number of flaviviruses can only infect insect cells. We hypothesize that insect-specific flaviviruses (ISFVs) represent model genetic...
We recently generated a fully synthetic porcine reproductive and respiratory syndrome virus strain (designated as PRRSV-CON), which confers unprecedented levels of heterologous protection. We report herein that the synthetic PRRSV-CON possesses a unique phenotype in that it induces type-I interferons (IFNs) instead of suppressing these cytokines as most of the naturally occurring PRRSV isolates do...
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