User talk:73.91.6.186

The dengue vaccine has now been banned some places which is not yet reflected in the article. Apparently if you still get dengue despite the vaccine, then it is much more severe than if you had not gotten the vaccine.

I've read that absent any vaccine, in the normal course of events people can get dengue up to 4 times due to different variants of the virus. But that when you get it a second time it's much more severe than the first time. This fits in with the vaccine also causing the symptoms to be worse.