Abstract
A concurrent dengue virus serotype 4 and chikungunya virus infection was detected in a woman in her early 50s returning to Portugal from Luanda, Angola, in January 2014. The clinical, laboratory and molecular findings, involving phylogenetic analyses of partial viral genomic sequences amplified by RT-PCR, are described. Although the circulation of both dengue and chikungunya viruses in Angola has been previously reported, to our knowledge this is the first time coinfection with both viruses has been detected there.
Highlights
Dengue has developed into a worldwide public health problem, especially over the last 50 years [5,6]
The majority of dengue virus (DENV) infections occur in the Asia– Pacific and Americas–Caribbean regions [5], while CHIKV is endemic to countries in Africa and Asia [9]
CHIKV/DENV coinfections were first reported in India in 1967 [13] and later confirmed in Sri Lanka (2008), Malaysia (2010) and Gabon (2007) [14,15,16], these coinfections are rarely notified
Summary
Dengue has developed into a worldwide public health problem, especially over the last 50 years [5,6]. The impact of other arboviruses on human health has followed a similar trend [7]. This is true for CHIKV, which, since 2004, has been an emerging pathogen, causing large outbreaks in many islands in the Indian Ocean and in the Indian subcontinent, where, in 2005-2006 alone, well over a million cases of CHIKV infection were reported from different states [8]. The majority of DENV infections occur in the Asia– Pacific and Americas–Caribbean regions [5], while CHIKV is endemic to countries in Africa and Asia [9]. CHIKV/DENV coinfections were first reported in India in 1967 [13] and later confirmed in Sri Lanka (2008), Malaysia (2010) and Gabon (2007) [14,15,16], these coinfections are rarely notified
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