I've just gotten over a dose of Dengue. Spent 2 days in hospital with suspected haemorrhagic fever symptoms & on a drip.
What I learnt was that there are four types of dengue viruses that cause dengue fever worldwide - Dengue 1, 2, 3 and 4 (& now, a possible 5th). A person infected with one type of dengue will subsequently only be immune to that dengue type. They will not be immune to other types of dengue and will, in fact, be at risk of developing severe symptoms if they contract another type of dengue.
The worst was the extreme lethargy & the pain behind my eyes. The rash & my unusually red face made me look like an alien.
I wouldn't wish it upon my worst enemies.