From: Dengue type 4 in Rio de Janeiro, Brazil: case characterization following its introduction in an endemic region
Year
2012
2013
Type of infection (nĀ =Ā 7)
n
Primary (nĀ =Ā 3)
2
1
Secondary (nĀ =Ā 4)
3
Age group (nĀ =Ā 12)
ā¤ 15 (nĀ =Ā 2)
NI
16ā65 (nĀ =Ā 7)
4
> 65 (nĀ =Ā 3)