SINGAPORE: Dengue cases have spiked in the first two months of this year.
It is a cause for concern as the surge comes outside the traditional peak season.
The situation is also aggravated by more people contracting the less common dengue strains — in particular virus types 1 and 3.
The National Environment Agency is concerned that people may have less immunity to these strains, which could lead to an increase in dengue incidents.
In Singapore, the most common strain is dengue virus type 2.
Last month, the type 2 strain accounted for just under 40 per cent of all dengue cases while type 1 and type 3 made up about 30 per cent each.
It was a big drop from June 2012, when type 2 accounted for about 85 per cent of all cases. Back then, type 1 made up only about 12 per cent of cases, and type 3 cases were negligible.
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