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  • Specialist laboratory networks as preparedness and response tool - the Emerging Viral Diseases-Expert Laboratory Network and the Chikungunya outbreak, Thailand, 2019 [Elektronski vir]
    Venturi, Giulietta ...
    The rapid increase in chikungunya virus (CHIKV) cases in Thailand since October 2018 raised concerns in Europe about the potential increased risk for public health of CHIKV importation through ... returning travellers [1,2]. Thailand is a popular tourist destination with 6.5 million European travellers in 2017 alone [3]. In the last 3 months of 2018, Thailand reported 3,314 probable and confirmed cases and in 2019, as at 27 May 2019, 3,592 CHIKV cases were reported in 23 provinces [4]. Cases of CHIKV infection imported from Thailand into Europe and the Middle East were reported in early 2019 [5,6]. Chikungunya is characterised by a rapid onset of high fever, rash and joint pain. CHIKV is an alphavirus that is transmitted to humans by the bite of some Aedes mosquitoes; Ae. albopictus, an important mosquito vector for CHIKV, is established in 15 European countries, mainly in the south of the continent [7]. Its presence has resulted in autochthonous transmission foci initiated by returning viraemic travellers in Italy and France on several occasions in the past [8-13]. It has been suggested that the A226V mutation in the E1 gene of the CHIKV genome could potentially influence the fitness of CHIKV East-Central-South African (ECSA)-Indian Ocean lineage (IOL) strains for certain Ae. albopictus populations [14]. This variant caused the first European outbreak in Italy in 2007 [11] and several autochthonous infection foci in France in 2014 and 2017 [8,9,12]. However, in 2016 a sub-cluster of ECSA-IOL strains without the A226V mutation emerged in Pakistan and neighbouring countries [15,16]. This E1 A226 variant caused two outbreaks with hundreds of cases in 2017 in Italy [10,13] and experimental studies showed that the Pakistani variant was as efficiently transmitted by Italian Ae. albopictus mosquitoes as the E1 A226V 2007 outbreak strain [17,18]. In southern Europe the Ae. albopictus activity season typically lasts between June and October. Its start%heightens awareness regarding the risk of local CHIKV transmission following the introduction of the virus by travel-associated viraemic cases. Hence, questions arose in March 2019 with European public health authorities about the threat of the CHIKV outbreak in Thailand to Europe. An assessment of such threat would be informed by the number of diagnostic requests and imported cases as well as the CHIKV strain currently circulating in Thailand. Here, we illustrate the potential of specialist laboratory networks as preparedness and response tool by rapid collecting and sharing of data and laboratory-diagnosed CHIKV patients related to the outbreak in Thailand.
    Vir: Eurosurveillance [Elektronski vir]. - ISSN 1560-7917 (Vol. 25, iss. 13, 2. Apr. 2020, str. 1-7)
    Vrsta gradiva - e-članek ; neleposlovje za odrasle
    Leto - 2020
    Jezik - angleški
    COBISS.SI-ID - 34762713

    Povezava(-e):

    https://www.eurosurveillance.org/content/10.2807/1560-7917.ES.2020.25.13.1900438
    DOI

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