Seroprevalence of dengue in blood donors in an outbreak: experience of a blood bank in north India.

Our aim was to determine the prevalence of dengue among blood donors at a centre in north India during an outbreak. A retrospective cross-sectional study was conducted using stored serum samples of 369 blood donors at the All India Institute of Medical Sciences (AIIMS), Rishikesh between August and November 2016. Serum samples were tested by an immune-chromatographic rapid test for the screening of dengue markers (IgG/IgM and NS-1). We found prevalence rates of IgG and NS-1 to be 14.9 and 0.54%, respectively.