title: Evolution of poliovirus type I during 5.5 years of prolonged enteral replication in an immunodeficient patient.
abstract: Poliovirus type 1 was isolated from an immunodeficient patient 4 days after onset of paresis (IS1) and after 5.5 years of prolonged enteral virus replication (IS2). Antigenic characterization revealed that IS1 was Sabin 1-like, whereas IS2 reacted like poliovirus 1 Mahoney. Complete genomic sequencing demonstrated the phylogenetic relationship (94.9% identity) of IS1 and IS2, which differed from the most closely related Sabin 1 by 5.4 and 8.3%, respectively. Both isolates had revertant-like mutations at nucleotides 480 and 6203. Deduced amino acid sequences indicated significant changes between IS1 and IS2 at the neutralizing antigenic site 1. Prolonged enteral replication, evolution, and shedding of poliovirus by immunodeficient patients should be considered in the poliovirus eradication strategy.
authors.affiliation: Institut für Virologie, Medizinische Hochschule, Hannover, Germany.
authors.forename: A
authors.initials: A
authors.lastname: Bellmunt
authors.forename: G
authors.initials: G
authors.lastname: May
authors.forename: R
authors.initials: R
authors.lastname: Zell
authors.forename: P
authors.initials: P
authors.lastname: Pring-Akerblom
authors.forename: W
authors.initials: W
authors.lastname: Verhagen
authors.forename: A
authors.initials: A
authors.lastname: Heim
mesh_terms: D020121:5' Untranslated Regions; D000595:Amino Acid Sequence; D001483:Base Sequence; D019143:Evolution, Molecular; D006801:Humans; D016867:Immunocompromised Host; D008969:Molecular Sequence Data; D009690:Nucleic Acid Conformation; D010802:Phylogeny; D011051:Poliomyelitis / Q000276:immunology / Q000821:virology*; D017955:Poliovirus / Q000145:classification / Q000235:genetics* / Q000302:isolation & purification; D012367:RNA, Viral / Q000737:chemistry; D016415:Sequence Alignment; D017386:Sequence Homology, Amino Acid; D013997:Time Factors; D014779:Virus Replication; D017201:Virus Shedding
chemical_list: D020121:5' Untranslated Regions; D012367:RNA, Viral