SINGAPORE -The situation in Dengue in Singapore appears to have ease with the record volume of cases at the beginning of last year, but authorities urge people to keep a watchful eye on mosquito nutritional areas at home to avoid the spike in cases.
NEA has reported more than 2,000 dengue cases so far this year in Singapore in a statement launching the national camp on dengue prevention on Thurday (April 29). 10,000 dengue infections have been reported in the first six months of last year.NEA said it anticipates that cases will grow by mid-year, with the weather warmer. Through the warmer months from June to October, the Aedes mosquito is accelerating and the virus is replicating in the insects faster. During these months, greater dengue transmission is usually observed.
Two additional factors may help the situation deteriorate, said NEA.
One is the high populations in certain areas of the adult Aedes aegypti mosquito – the vector that spreads the dengue virus. One is the spread of previously uncommon dengue virus serotypes in the country. That means that there would be no immunity from these serotypes against infection.
The infection of any of the four dengue serotypes induces immunity to one, but does not provide long-term protection against the other.Since 2016, serotype 2 (DenV-2) has been the predominant dengue virus serotype in Singapore, says NEA.
But the number of dengue cases and serotype 3 and 4 cluster (DenV-3 and DenV-4) has increased over the past two months, representing more than 60% of the cases sampled. Between January and March of this year, no DenV-1 cases were reported in Singapore.
“As DenV-3 has not been dominant since about three decades ago, and the incidence of DenV-4 has consistently been low, more people are susceptible to these two serotypes currently in circulation,” NEA said.
In the run-up to the traditional middle-year peak dengue campaign, NEA stated that the annual dengue prevention campaign was to bring the community together to address the dengue threat seriously. In collaboration with NEA volunteers, the Icelandic campaign will include local grassroots advisers and leaders, who will visit housing centers and areas with high Aedes aegypt mosquito populations. Their activities will include:
During these visits, residents will be informed about common habitats for mosquito breeding and will share tips on dengue prevention.On Thursday, Mr Desmond Tan, Minister of State for Sustainability and Environment, launched a campaign to commemorate the mozzi wipeout, to remove mosquito-breeding areas by visiting several homes in Zhenghua Division in Holland-Bukit Timah, GCR.
He said the number of cases has begun to rise, even though this year’s situation has improved compared to last year. For example, between 18 and 24 April 131 cases were reported, from 112 between 11 and 17 April and 102 cases the previous week.
In cases last year the circuit breaker probably caused a spike, he said, as mosquitoes are more likely to bit people when always at home.
“With people going back (to work), we definitely hope that the number of incidents will go down,” said Mr Tan. “But we have to prevent mosquito breeding in the first place. When a mosquito breeds, that poses a risk to the community – whether they are at home or walking around.”
Source: The Straits Times