Acute Febrile illness- malaria, dengue, chikungunya, Leptospirosis, Typhoid fever , H1N1( Flu) Fever presenting suddenly and lasting around 7-14 days is included here. These are most commonly seen in monsoon season. Influenza, Dengue, Chikungunya and other viral infection, Malaria, Leptospirosis, Ricketssia are common causes for acute fever conditions. Usually these are accompanied by bodyache, joint pains, headache, rash on skin, loose motions and vomiting. Usually these infections get resolved if diagnosed and treated early. In a small percentage of cases, unfortunately complications may occur requiring high level support care and icu care.