Dengue fever outbreak is present in more than 100 cities presently suggested by WHO. There is no vaccination for this viral infection. One needs to take precautions to prevent Dengue fever. Its main symptom is fever, tiredness and rashes. One need to take precautionary action to prevent infections! Get more tips on Dengue fever: http://justforhearts.org/top-10-tips-to-prevent-dengue/