Reverse Transcription-Polymerase Chain Reaction Testing on Filter Paper-Dried Serum for Laboratory-Based Dengue Surveillance-American Samoa, 2018.

Laboratory-based surveillance for arboviral diseases is challenging in resource-limited settings. We evaluated the use of filter paper-dried sera for detection of dengue virus (DENV) RNA during an outbreak in American Samoa. Matched liquid and filter paper-dried sera were collected from patients with suspected dengue and shipped to a reference laboratory for diagnostic testing.