Development of Fit-for-Purpose, High Quality Proficiency Samples for Interlaboratory Evaluation of RT-PCR Detection of HPAI H5N1 in Milk. - Smith EL; Jin Y; Miller MR; Frost K; Ulaszek J; Nemser SM; Goodman LB; Uhlig S; Schlierf A; Hettwer K; Kmet M; Tkachenko A; et al. (Food and environmental virology, 2026)