The B.1.427/1.429 (epsilon) SARS-CoV-2 variants are more virulent than ancestral B.1 (614G) in Syrian hamsters. oleh Timothy Carroll, Douglas Fox, Neeltje van Doremalen, Erin Ball, Mary Kate Morris, Alicia Sotomayor-Gonzalez, Venice Servellita, Arjun Rustagi, Claude Kwe Yinda, Linda Fritts, Julia Rebecca Port, Zhong-Min Ma, Myndi G Holbrook, Jonathan Schulz, Catherine A Blish, Carl Hanson, Charles Y Chiu, Vincent Munster, Sarah Stanley, Christopher J Miller