Determination of a Viral Load Threshold To Distinguish Symptomatic versus Asymptomatic Rotavirus Infection in a High-Disease-Burden African Population

J Clin Microbiol. 2015 Jun;53(6):1951-4. doi: 10.1128/JCM.00875-15. Epub 2015 Apr 8.

Abstract

We evaluated quantitative real-time PCR to establish the diagnosis of rotavirus gastroenteritis in a high-disease-burden population in Malawi using enzyme immunoassay as the gold standard diagnostic test. In 146 children with acute gastroenteritis and 65 asymptomatic children, we defined a cutoff point in the threshold cycle value (26.7) that predicts rotavirus-attributable gastroenteritis in this population. These data will inform the evaluation of direct and indirect rotavirus vaccine effects in Africa.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Asymptomatic Infections*
  • Child, Preschool
  • Gastroenteritis / diagnosis*
  • Gastroenteritis / epidemiology
  • Gastroenteritis / virology
  • Humans
  • Immunoenzyme Techniques
  • Infant
  • Infant, Newborn
  • Malawi
  • Real-Time Polymerase Chain Reaction
  • Rotavirus / genetics*
  • Rotavirus Infections / diagnosis*
  • Rotavirus Infections / epidemiology
  • Rotavirus Infections / virology
  • Viral Load / standards*