Is there dengue in Portugal?
A species of mosquito that carries and transmits the dengue virus has been identified for the first time in Portugal, in the northern region of the country, the Directorate General of Health (DGS) and the Dr.
Where did dengue first come from?
Where did the dengue viruses first come from? Scientists hypothesize that the dengue viruses evolved in nonhuman primates and jumped from these primates to humans in Africa or Southeast Asia between 500 and 1,000 years ago. The distribution of dengue serotypes in 1970 (a) and 2004 (b).
How common is dengue in Brazil?
Brazil is considered an endemic country for dengue, such that more than 1,544,987 confirmed cases were notified in 2019, which means an incidence rate of 735 for every 100 thousand inhabitants. Climate is an important factor in the temporal and spatial distribution of vector-borne diseases, such as dengue.
Is there dengue fever in Madeira?
The island has not reported any dengue cases since the outbreak in 2012. However, there is a high risk that an introduction of the virus would result in another autochthonous outbreak given the presence of the vector and permissive environmental conditions.
How have Brazilian mosquitoes helped virus researchers?
Dengue-resistant mosquitoes breed in a Rio de Janeiro laboratory, producing offspring infected with bacteria packing a punch in the fight against the deadly virus, which is exploding across Brazil this year.
What diseases do mosquitoes carry in Brazil?
Vectorborne (including mosquitoborne) diseases are present in many areas of Brazil; these infections are the leading causes of febrile illness among travelers returning from South America. Aedes mosquitoes transmit chikungunya, dengue, and Zika.
Is dengue virus man made?
But dengue is a disease of urbanisation and human travel. In the words of Suchitra Nimmannitya, a Thai specialist on the disease, the infected Aedes aegypti is “a man-made mosquito”.
When did dengue start in world?
Outbreaks of febrile illnesses compatible with dengue fever have been recorded throughout history, with the first epidemic described in 1635 in the West Indies. In 1779-1780, the first confirmed, reported outbreak of dengue fever occurred almost simultaneously in Asia, North America, and Africa.
Does Brazil have a mosquito problem?
Today, Brazil has the greatest number of dengue cases in the world, with 3.2 million cases and 800 deaths reported from 2009–2014. Brazil has also been severely affected by outbreaks of Zika virus and chikungunya in the last few years.
What mosquitoes are in Brazil?
Aedes aegypti mosquitoes carry a number of infections including dengue, Zika, chikungunya, and yellow fever. Dengue has increased almost 15-fold over the last 20 years, and is a particular problem in Brazil.