Persistent infection with West Nile virus years after initial infection.

Murray, Kristy; Walker, Christopher; Herrington, Emily; Lewis, Jessica A; McCormick, Joseph; Beasley, David W C; Tesh, Robert B; Fisher-Hoch, Susan · J Infect Dis · 2010

case_series · Level IV

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Abstract

West Nile virus (WNV) RNA was demonstrated in 5 (20%) of 25 urine samples collected from convalescent patients 573-2452 days (1.6-6.7 years) after WNV infection. Four of the 5 amplicons sequenced showed >99% homology to the WNV NY99 strain. These findings show that individuals with chronic symptoms after WNV infection may have persistent renal infection over several years.

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