Volume 23, Number 12—December 2017
Spread of Canine Influenza A(H3N2) Virus, United States
*Data from Newbury et al. (33) Table 1, used with permission. Data shown as rRT-PCR Ct values. Values <36 are considered positive results (black cells), and values >37 but <40 are considered weak positive results (dark gray cells). Light gray cells indicate negative rRT-PCR assay results for influenza A virus shedding. Ct, cycle threshold; Neg, negative; NT, not tested; rRT-PCR, real-time reverse transcription PCR.
†Samples for which virus was successfully isolated.