Study of the Prognostic Value of Musculoskeletal Ultrasound in Adults With Chikungunya

Inclusion Criteria: 1. Age at onset of symptoms ≥ 45 years 2. Seen in consultation at the University Hospital of Fort-de-France 3. Suspected chikungunya infection (fever and sudden onset of joint pain affecting the wrists, hands, ankles or knees) 4. Duration of symptoms suggestive of infection chikungunya less than or equal to 10 days 5. Presence of joint pain on the day of inclusion 6. No history of inflammatory arthritis 7. Absence of steroidal or non-steroidal anti-inflammatory drugs taken within two weeks prior to inclusion 8. Ability to participate in the study throughout its duration (12 months) 9. Patient affiliated or beneficiary of a social health care. 10. Acceptance to participate in the study and monitoring proposed and signed informed consent Exclusion Criteria: 1. Age at onset of symptoms \<45 years 2. Duration of symptoms suggestive of chikungunya for more than 10 days 3. Lack of joint pain on the day of inclusion 4. History of inflammatory arthritis Nonsteroidal anti-inflammatory drugs or 5. Taking in the two weeks preceding the inclusion 6. Inability to participate in the study throughout its duration (12 months) 7. Patient is not affiliated or beneficiary of a social health care. 8. Refusal to participate in the study or to sign a consent