answered May 18, 2011 at 07:48PM
The precautions for avoiding a second infection are the same as avoiding a first infection: that is, to avoid mosquito bites by infected mosquitoes. If you have had dengue fever before, the subsequent infections can make you at increased risk for severe complications, so avoidance is a good idea.
You can contract dengue fever 4 times as there are 4 varieties. Wishing you the best on avoiding this irritating illness.