Figure 4. Comparison of probability of detecting H4N6 AIV RNA using 3 different sampling methods.
Fecal samples show a significantly higher probability of detection 4–8 dpi. Overall, the predicted probability of detecting AIV for a single swab is 38% for a cloacal swab, 44% for an oropharyngeal swab, and 52% for a fecal swab equivalents.