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Effect of neutralization escape on virulence of henipaviruses in hamsters. Time to death (A and B) and percentage survival over time (C and D) for hamsters infected with wild-type (WT) and neutralization-escape mutants of Hendra virus (HeV; A and C) and Nipah virus strain Malaysia (NiV-M; B and D). Error bars represent standard deviations. *P < .05 by 2-way analysis of variance, compared with the WT strain.
