Dengue - Multistate (world) - Monitoring seasonal epidemics (ECDC/CDTR, August 26 2013, extract)

[Giuseppe]

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


COMMUNICABLE DISEASE THREATS REPORT

Week 34, 18-24 August 2013

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Dengue - Multistate (world) - Monitoring seasonal epidemics

Opening date: 20 April 2006 Latest update: 22 August 2013


Epidemiological summary

• Asia:
  • Laos, Malaysia, New Caledonia and Singapore have reported more cases in 2013 than 2012 for the same time period.
  • There has also been an increase of cases in the Philippines and Vietnam.
  • French Polynesia is also experiencing increased dengue levels.
  • In Thailand there have been 81 763 dengue fever cases in 2013. Sixteen provinces report high numbers of patients and as the outbreak is becoming difficult to contain, health campaigns are being set up. Thailand's rainy season, running from May to September, is a high risk period.
  • In Pakistan a slow increase of cases has been seen, leading to 549 cases reported in Sindh province. In Karachi the number of cases has risen to 646 since the beginning of the year. In India (Pune, Maharashtra state), there have been 44 cases in July; and overall six deaths in 2013. In Sri Lanka, 20 216 cases have been observed since the beginning of the year.
• North America, Central America and South America:
  • In the United States, three confirmed cases of locally-acquired dengue fever were detected in Florida, in Martin and St. Lucie County residents. After an investigation, it appears that the exposure was from local mosquitoes. Locally-acquired dengue is rare in the United States (previous case was reported in 2011).
  • In Mexico, the number of dengue cases increased by 61% compared with 2012. Since January, 32 deaths and over 16 000 cases have been recorded.
  • In Costa Rica, there have been 2 055 cases in 2013. In September 2012 there were 8480 cases.
  • In Honduras, after the declared state of emergency on 30 July 2013, there have been overall 15 546 cases and 17 deaths.
  • In the Dominican Republic there have been, as of 8 August 2013, 7975 cases and at least two deaths.
  • In Brazil, many areas are affected, and fatalities are being reported, to name just a few: Ceara state reports 40 077 cases, and 21 deaths. In Mato Grosso state, 40 462 cases and 30 deaths have been recorded in 2013. Minas Gerais state reports 255 272 cases and 99 deaths.
• Africa:
  • The dengue epidemic in Angola, which started on 12 March 2013 has reached 1008 cases and is affecting four provinces(Kwanza Sul, Uige, Luanda and Malanje). No further update on this outbreak found.

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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. Before the 2012 outbreak in the Autonomous Region of Madeira, local transmission of dengue was reported for the first time in France and Croatia in 2010. Imported cases are being detected in European countries, highlighting the risk of locally acquired cases occurring in countries where the competent vectors are present.


Actions

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

From week 28 onwards, ECDC has been monitoring dengue on a biweekly basis.

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