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Table 3 Proportion of Submitted Specimens Test-Positive for Norovirus Group in RT2-PCR-Identified Outbreaks, According to Presence or Absence of Electron Microscopic Confirmation

From: Of gastro and the gold standard: evaluation and policy implications of norovirus test performance for outbreak detection

  N Submitted Number RT2-PCR Positive Proportion (95% C.I.)
All RT 2 -PCR Positive Outbreaks 367 1166 757 0.65 (0.62–0.68)
EM Positive Outbreaks 158 602 350 0.58 (0.54–0.62)
EM Negative Outbreaks 209 564 407 0.72 (0.68–0.76)
  1. RT2-PCR, real-time reverse-transcriptase polymerase chain reaction; EM, electron microscopy; C.I., binomial confidence interval.