Figure 3From: Optimal specimen collection and transport methods for the detection of avian influenza virus and Newcastle disease virusMean AIV titers by quantitative real-time RT-PCR for a single swab or pools of 5 or 11 swabs. Statistical significance (p ≤ 0.05) in differences among the amount of virus recovered by numbers of swabs pooled for each day post inoculation is indicated by different letters above the bars. Error bars represent standard deviation.Back to article page