It is difficult to Distinguish Chikungunya and Dengue based on clinical findings alone:

• Chikungunya and dengue viruses are transmitted by the same mosquitoes

• The viruses can circulate in the same area and cause occasional co-infections in the same patient

• Chikungunya virus more likely to cause high fever, severe polyarthralgia, arthritis, rash, and lymphopenia

• Dengue virus more likely to cause neutropenia, thrombocytopenia, hemorrhage, shock, and death

• Patients with suspected chikungunya should be managed as dengue until dengue has been ruled out

• Proper clinical management of dengue reduces the risk of medical complications and death

• Aspirin and other NSAIDs can increase the risk of hemorrhage in patients with dengue

*Information from the Center for Disease Control Chikungunya Fact Sheet