Chikungunya: WHO fact sheet on Chikungunya providing key facts and information on scope of the problem, who is at risk, prevention, WHO response.
Epidemiological Update
Dengue
7 February 2020
Situation summary
In the Region of the Americas, between epidemiological week (EW) 1 and EW 521 of 2019, a total of 3,139,335 cases of dengue have been reported (321.58 cases per 100,000 population), including 1,538 deaths. Of the total cases, 1,367,...353 (43.6%) were laboratory-confirmed and 28,169 (0.9%) were classified as severe dengue. The case-fatality rate was 0.049%.
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The aim of this toolkit is to guide countries on how to best estimate their current burden of dengue by combining existing data from dengue surveillance systems with on-going research efforts to measure the community burden
of dengue.
Dengue is a mosquito-borne viral disease that has rapidly spread to all regions of WHO in recent years. Dengue virus is transmitted by female mosquitoes mainly of the species Aedes aegypti and, to a lesser extent, Ae. albopictus. These mosquitoes are also vectors of chikungunya, yellow fever and Zik...a viruses. Dengue is widespread throughout the tropics, with local variations in risk influenced by climate parameters as well as social and environmental factors.
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El dengue es una enfermedad vírica transmitida por mosquitos que en los últimos años se ha propagado rápidamente a todas las regiones de la OMS. El virus del dengue se transmite a través de mosquitos hembra principalmente de la especie Aedes aegypti y, en menor grado, de la especie Ae. albopict...us. Estos mosquitos también son vectores de los virus de la fiebre chikungunya, la fiebre amarilla y el Zika. La enfermedad está muy extendida en los trópicos, con variaciones locales en el riesgo que dependen de los parámetros climáticos y de los factores sociales y ambientales.
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La dengue est une maladie virale transmise par les moustiques qui s’est rapidement propagée dans toutes les Régions de l’OMS ces dernières années. Le virus de la dengue est transmis par des moustiques femelles, principalement de l’espèce Aedes aegypti, mais aussi dans une moindre mesure A...e. albopictus. Ces moustiques sont aussi vecteurs du virus du chikungunya, du virus amaril et du virus Zika. La dengue est largement répandue sous les tropiques, avec des variations locales du risque qui dépendent des caractéristiques climatiques, ainsi que de facteurs sociaux et environnementaux.
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Dengue Epidemiology
The first record of a case of probable dengue fever is in a Chinese medical encyclopedia from the Jin Dynasty (265–420 AD) which referred to a “water poison” associated with flying insects. The first recognized Dengue epidemics occurred almost simultaneously in Asia, Afr...ica, and North America in the 1780s, shortly after the identification and naming of the disease in 1779. The first confirmed case report dates from 1789 and is by Benjamin Rush, who coined the term "breakbone fever" because of the symptoms of myalgia and arthralgia.
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Weekly epidemiological recordRelevé épidémiologique hebdomadaire 29 JULY 2016, 91th YEAR / 29 JUILLET 2016, 91e ANNÉENo 30, 2016, 91, 349–364