Deaths rarely occur from Chikungunya fever, but residual joint stiffness can last for weeks or months. Treatment is limited and no vaccine is available. Oropouche Virus Disease - Brazil, Panama, and Trinidad. Large outbreaks have occurred of this nonfatal viral infection which is transmitted by gnats or midges found in some urban areas of the Amazon Basin. Symptoms include abrupt high fever, severe headache, muscle and joint pain, nausea, and diarrhea.
Treatment is limited and no vaccine is available.
Ross River Virus infection is transmitted by mosquito bites. Symptoms include the abrupt onset of low-grade fever, joint pain and a rash. After infection, a prolonged arthritis can occur, but generally the arthritis will clear up in weeks or months. Treatment is limited and no vaccine is available. This viral infection is transmitted by the bite of an infected tick.