*11 positive specimens collected, three from one patient tested three times over 5 days therefore only one positive specimen was used to calculate prevalence.
Conflicting prevalence of newly identified KI(KIPyV), WU(WUPyV) and Merkel Cell Carcinoma(MCPyV) polyomaviruses have been reported in progressive multifocal leukoencephalopathy(PML) patient samples, r
aSamples collected for BKPyV infection diagnosis. bFrom patients under natalizumab (Tysabri) therapy. cSamples collected for herpesvirus infection diagnosis. dSamples collected for JCPyV infection dia
Total: 269 samples from 123 patients.PML: progressive multifocal leukoencephalopathy; ONS: other neurological syndromes; N/A: specimens not available; MS: multiple sclerosis; KIPyV: KI polyomavirus; W