Only about 25% of those infected show symptoms, which include high fever, severe headache, muscle and joint pain. In extreme cases, they can bring bleeding, breathing difficulties, organ failure and death power.
In Singapore, 16 people died of dengue this year, and - twice the death toll in 2013.
In the warmer months from June to September in the city are traditionally peak season Dengue state, due to accelerated development; house; Gnat and a shorter incubation period is about Dengue virus.
But this year, which was an especially evil.
Last week alone, 1,468 cases were reported, is the third cause of seven consecutive numbers have exceeded 1,000 - a number they are written in a Singapore weekly dengue cases ever.
Because of the soaring cases in Singaporean control of mosquito breeding season has the potential to remove checks out to the public areas and housing estates.
In the past three weekends of premises 6,900 underwent inspection and vector control, according to the NEA.
"Disclosing the majority of mosquito breeding season continues to be found in the common areas of residential former estate premises and houses," the NEA said Thursday.
So, starting from the July 15, will increase by means of filling them up with as many men who fail in the agency's action both inside and outside, to keep them from the mosquitoes, and they warmed themselves for their substance. In order to favor the mosquitoes are known damp, dark areas, and there will be healed.
Why is it so bad this year?
Dengue cases have grown dramatically worldwide, increasing 30-fold in the past 50 years. There are an estimated 100-400 million infections each year, and about half the world's population is now at risk, according to the World Health Organization.
Scientists say the hotter, wetter weather brought on climate change has created ideal conditions for female mosquitoes to lay their eggs. It is not only that, for nothing is more production of gnats, they say, but only to use in order to get a more rapid urbanization, all the inhabitants of the disease of the nations, which, in many Asian in contact with the nearer they are to the Sacae of the beasts, they were destroyed.
Last year, the Philippines country declared dengue epidemic in August. By the end of the month, 1,107 people died of the disease, and more than 270,000 had been infected.
In Singapore, experts believe that, because of a surge in dengue cases this is a key revenue year old from what strain of the Dengue virus is around for nearly three decades.
There are four strains or serotypes of Dengue virus. In Singapore, Denver 2-2016; that some, however, who had been the prevailing mode, beginning from the last days of the year, it is less common to DENV 3, there has been the rise of the Dahar in accordance with the Luo, the associate professor of Nanyang Technological of Infection and Immunity from the University.
"These outbreaks are often out of place, and made of DENV1 2 In addition, in quiet and in a state built on the protection of the residents, as these emerging Denver DENV 3, 'Luo said.
According to the NEA, Denver cases, 3 to 48% of dengue cases in February, almost double the Denver-2 cases.
"And there was the case with the Denver-3 as it was back in the Denver-3 Dengue outbreaks in Malaysia for nearly three decades," the NEA said.
"It means that the members of our school DENV-3 carry out lower, and therefore a large part of the population is susceptible to infection DENV-3." they said.
This lockdown measures made it worse?
Another potential factor that worsened dengue outbreak this year, Luo said lockdown could be used to coronavirus measures.
In April, the other faults and broke into a wave of migrant workers in Malaysia do dormitories, sending a new daily infections from below 100 to 1000, and on top of it.
To add to the spread, the government issued a stay-at-home closed nonessential order to workplaces and schools. These restrictive cup, which means "circuit breaker" lasted from April to June 1 7.
"When more people stay at home all the time can not be more and more opportunities for residential canopy breed twice blood," Luo said.
According to the WHO and its mate on the canopy, which is a feeder. In the early morning and evening periods, biting fleeing away.
I looked at the NEA double growth of mosquito larvae caught five State at home two months break the corridors around residential areas during the past two months. "The sum of each mosquito breeding season for most homes in the five areas of the cluster dengue 84%," it said.
Helen reporting for CNN's Lamarck attention.