Task: Answer Verification
Input (English): Question: Does seroprevalence of alphavirus antibodies in a cross-sectional study in southwestern Tanzania suggest endemic circulation of chikungunya?
Answer: Alphavirus infections may contribute significantly to the febrile disease burden in the study area, and are associated with several arthropod-borne infections. Their spread seems only limited by factors affecting mosquitoes, and seems less restricted than that of Rift Valley fever.
Output (English): yes