Boris A. M. Pastorino

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Chikungunya virus (CHIKV), a member of the alphavirus genus, is of considerable public health concern in Southeast Asian and African countries. However, despite serological evidence, the diagnosis of this arthropod-borne human disease is confirmed infrequently and needs to be improved. In fact, illness caused by CHIKV can be confused with diseases such as(More)
The identification of cell types replicating dengue viruses is an important step towards the understanding of the pathophysiology of dengue severe forms. Since the detection of negative strand viral RNAs is the more reliable marker of active replication for single-strand positive sense RNA viruses, we reassessed the specificity of RT-PCR assays already(More)
We report the isolation of chikungunya virus from a patient during an outbreak of a denguelike syndrome in Cameroon in 2006. The virus was phylogenetically grouped in the Democratic Republic of the Congo cluster, indicating a continuous circulation of a genetically similar chikungunya virus population during 6 years in Central Africa.
OBJECTIVES Infection with yellow fever virus (YFV), the prototypic mosquito-borne flavivirus, causes severe febrile disease with haemorrhage, multi-organ failure and a high mortality. Moreover, in recent years the Flavivirus genus has gained further attention due to re-emergence and increasing incidence of West Nile, dengue and Japanese encephalitis(More)
We describe the spread of a dengue virus during an outbreak in Saint Martin island (French West Indies) during winter 2003-2004. Dengue type 3 viruses were isolated from 6 patients exhibiting clinical symptoms. This serotype had not been detected on the island during the preceding 3 years. Genome sequence determinations and analyses showed a common origin(More)
BACKGROUND Chikungunya is an Aedes -borne disease characterised by febrile arthralgia and responsible for massive outbreaks. We present a prospective clinical cohort study and a retrospective serological study relating to a CHIK outbreak, in the Republic of Congo in 2011. METHODOLOGY AND FINDINGS We analysed 317 suspected cases, of which 308 (97.2%) lived(More)
1604 Emerging Infectious Diseases • www.cdc.gov/eid • Vol. 12, No. 10, October 2006 codes observed in this study suggests that in hospitals where influenza testing is routinely performed, most patients whose hospitalization summary includes an influenza-specific ICD-9 code actually have influenza. However, misclassification of patients with parainfluenza(More)
This study reports the first isolation and partial genetic characterization of Chikungunya virus (CHIKV) from patients during a 2006-2007 dengue-like syndrome outbreak in Gabon. The isolated viruses were phylogenetically close to strains isolated in the Democratic Republic of the Congo 7 years ago and to strains isolated more recently in Cameroon. These(More)
Arbidol (ARB) is an antiviral drug originally licensed in Russia for use against influenza and other respiratory viral infections. Although a broad-spectrum antiviral activity has been reported for this drug, there is until now no data regarding its effects against alphavirus infection. Here, the in vitro antiviral effect of ARB on Chikungunya virus (CHIKV)(More)
Dengue shock syndrome (DSS), the major life threatening outcome of severe dengue disease, which occurs in some patients in the course of dengue infection, is the consequence of plasma leakage in the microvascular territories. Data from clinical and in vitro studies suggest that an inadequate immunological response is partly responsible for the(More)