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28 Jan 2013

Dengue - Multistate (world) - Monitoring seasonal epidemics (ECDC/CDTR, January 28 2013, edited)

[Source: European Centre for Disease Control and Prevention (ECDC), full PDF document: (LINK). Edited.]




Dengue - Multistate (world) - Monitoring seasonal epidemics

Opening date: 20 April 2006 - Latest update: 24 January 2013

Dengue fever is one of the most prevalent vector-borne diseases in the world, affecting an estimated 50-100 million people each year, mainly in the tropical regions of the world. The identification of sporadic autochthonous cases in non-endemic areas in recent years has already highlighted the risk of the occurrence of locally acquired cases in EU countries where the competent vectors are present. The detection of a dengue outbreak in the Autonomous Region of Madeira, Portugal, further underlines the importance of surveillance and vector control in other European countries.


Update of the week

The Autonomous Region of Madeira, Portugal experienced an outbreak of dengue starting in October 2012 with sporadic cases still being reported. No autochthonous cases were reported in other European countries in 2012 and at the start of 2013.



Epidemiological summary

  • Europe:
    • There have been no reports of confirmed autochthonous dengue infections in Europe in 2013, besides the on-going dengue outbreak in Madeira.
  • Asia:
    • There is no new update from WHO Western Pacific Region this week. In the Middle East, local media in Jeddah, Saudi Arabia, have reported five cases of dengue fever. This has still not been confirmed but highlights the need for entomological surveillance in the region.
  • Latin America:
    • High dengue activity is reported across Central America. In South America, an overall high but not unexpected situation is reported, with increasing dengue activity across especially Brazil, Colombia, Bolivia and Paraguay. Of note this week, Campo Grande in Brazil declared a state of emergency after they recorded nearly 7 700 cases since 31 December 2012. The Ministry of Health in Paraguay has so far this year reported a decline in notified dengue cases in both Central and Asuncion.
  • The Caribbean:
    • There is no new update this week from CDC on the dengue situation in Puerto Rico. According to local health authorities in Cuba, there has been a recent spike of dengue cases across five provinces with 262 confirmed cases reported in 2013.



ECDC assessment

ECDC monitors individual outbreaks, seasonal transmission patterns and inter-annual epidemic cycles of dengue through epidemic intelligence activities in order to identify significant changes in disease epidemiology. Of particular concern is the potential for the establishment of dengue transmission in Europe. Local transmission of dengue was reported for the first time in France and Croatia in 2010, and imported cases are detected in other European countries, highlighting the risk of locally acquired cases occurring in countries where the competent vectors are present.



ECDC has published a technical report on the climatic suitability for dengue transmission in continental Europe and guidance for invasive mosquitoes’ surveillance.