Range: 50:1 unitless
||Roy AM, Parker JS, Parrish CR, Whittaker GR. Early stages of influenza virus entry into Mv-1 lung cells: involvement of dynamin. Virology. 2000 Feb 1 267(1):17-28. p.24 left column 2nd paragraphPubMed ID10648179
||It has been estimated that from
an original particle:infectivity ratio of 50:1, approximately
one in four virus particles that enter the cell transit to the
nucleus and produce a productive infection (Martin and
Helenius, 1991 PMID 1985199).