Weekly number of dengue cases in Singapore surpasses historical high – CNA

SINGAPORE: The weekly variety of dengue circumstances in Singapore has surpassed the file excessive reported in 2014, with 895 folks contaminated in simply five-and-a-half days.

That brings the whole variety of dengue circumstances in Singapore in 2020 to date to 10,732, in accordance with knowledge from the Nationwide Atmosphere Company (NEA).

The 895 circumstances have been reported between Jun 7 and 3pm on Friday (Jun 12). NEA’s weekly report of dengue circumstances takes into consideration infections recognized between Sundays and Saturdays, that means the variety of circumstances this week is more likely to rise additional.

At the very least 12 folks have died from dengue this 12 months, with the victims aged between 56 and 80.

With Singapore simply getting into the normal dengue peak months – from June to October – the company warned final week that the variety of circumstances weekly may “exceed the historic excessive of 891” circumstances except “pressing collective group motion” is taken.

Singapore has additionally not seen such a excessive weekly variety of circumstances for the reason that peak years in 2013 and 2014, when the weekly circumstances hit a excessive of 840 and 891 respectively, NEA mentioned on its web site.

Dengue cases in 2013 to Jun 3, 2020

Graph exhibiting the “historic excessive” of 891 dengue circumstances, recorded in 2014, and the height of 840, recorded throughout Singapore’s largest outbreak in 2013. (Graph: NEA)

READ: Spike in dengue circumstances: Why Singapore might even see worst outbreak in years

The full variety of circumstances in Singapore this 12 months is predicted to surpass the 15,998 circumstances recorded final 12 months, and the 22,170 circumstances reported through the nation’s worst outbreak in 2013, the company mentioned final week.

Within the first 4 months of this 12 months, the weekly variety of circumstances hovered between 300 and 400, already excessive for these months.

But it surely surged to between 500 and 732 circumstances per week in Could, and climbed above 800 in June. Final week, between Could 31 and Jun 6, the nation recorded 870 dengue circumstances.

As of Saturday, there have been 210 lively dengue clusters, of which 66 are deemed as “high-risk” by the company.

These embody a cluster of 207 circumstances within the Woodleigh Shut space, 142 circumstances within the Potong Pasir Avenue 1, Avenue 2 and Avenue Three areas, in addition to 135 circumstances within the Tampines Avenue 7 space.

You may view the total checklist on NEA’s web site.

“The standard dengue peak season may final for a number of months, from June to October, thus fast motion should be taken to interrupt illness transmission,” the company mentioned.

“NEA urgently seeks the group’s help to make sure that their houses (together with frequent corridors the place home gadgets, akin to potted vegetation and pails, are stored) and gardens of their compounds are free from mosquito breeding, and to make use of aerosol insecticide spray and mosquito repellent to guard themselves and their households.”

READ: How a vaccine manufactured from mosquito spit may assist cease the following epidemic


The spike in early Could coincided with Singapore’s COVID-19 “circuit breaker” interval, NEA mentioned. The Aedes aegypti mosquito, which spreads the dengue virus, dwells primarily in indoor areas and bites primarily through the day.

With extra folks staying at dwelling, this implies extra “blood meals” for the mosquitoes, particularly in residential areas the place the mosquito inhabitants is excessive.

There has additionally been a pointy rise within the variety of mosquito breeding areas.

NEA officers noticed a five-fold improve within the incidence of Aedes mosquito larvae detected in houses and customary corridors in residential areas through the two-month circuit breaker, in comparison with the 2 months earlier than. For development websites, that determine doubled through the circuit breaker.

Singapore worker fumigates dogging mosquito dengue construction site

Employees sporting face masks fumigate a development website to stop the unfold of dengue fever in Singapore on Apr 17, 2020. (Picture: AFP/Roslan Rahman)

The re-emergence of a much less frequent dengue virus serotype – DENV-3 – is one other issue for the rise in circumstances.

The serotype was final in a “dominant place” in Singapore about 30 years in the past, which suggests there’s low immunity within the inhabitants and a fast illness transmission.

And as Singapore enters the normal peak dengue season, the hotter climate is facilitating “quicker multiplication” of the Aedes aegypti mosquito and the dengue virus, additional rising the probabilities of transmission.

READ: Trimming of inexperienced verges to be stepped up as measures ease after circuit breaker


A majority of the dengue clusters are in residential areas. Residents are “strongly urged” to take steps to guard themselves and stop mosquitoes from breeding.

This embody spraying insecticide in darkish corners of the house, akin to underneath the couch and mattress or behind curtains and in bathrooms, NEA mentioned.

Spatial mosquito repellents, akin to mosquito coils, may also be utilized in well-ventilated areas of the house, and residents ought to think about using mosquito screens.

Final month, greater than 300,000 bottles of mosquito repellent have been issued to households in cluster areas. Folks ought to apply mosquito repellent to guard themselves from being bitten, the company mentioned.

Folks must also forestall potential mosquito breeding grounds. They need to flip flower pot plates, tip vases, go away pails overturned or clear the roof gutter and drains inside compounds.

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