| emergence of west nile virus in west bengal, india: a new report. | the icmr virus unit in kolkata functions as an appex referral laboratory for the detection of dengue (denv) and chikungunya (chikv) infections in the eastern part of india. in spite of efforts for confirmatory diagnosis, some samples remain undiagnosed every year. west nile virus (wnv) infection may mimic either dengue (flavivirus) or chikungunya (alphavirus) like illness. wnv is endemic in the tropical region where its principal/potential vectors are aedes and culex. | 2017 | 28673021 |