Yes, dengue is a VHF (Viral Hemorrhagic Fever).
The provided reference material supports this conclusion by mentioning dengue among examples of VHF for which insect and tick bite avoidance measures are relevant. The quote: "Follow strict insect and tick bite avoidance measures (relevant for some forms of VHF such as CCHF, dengue, RVF and yellow fever)" indicates that dengue fever falls under the umbrella of Viral Hemorrhagic Fevers.
