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Recombinant Nontypeable Genotype II Human Noroviruses in the Americas.

Tohma K, Lepore CJ, Degiuseppe JI, Stupka JA, Saito M, Mayta H, Zimic M, Ford-Siltz LA, Gilman RH, Parra GI.

Emerg Infect Dis. 2020 Jan;26(1):157-159. doi: 10.3201/eid2601.190626.


Population Genomics of GII.4 Noroviruses Reveal Complex Diversification and New Antigenic Sites Involved in the Emergence of Pandemic Strains.

Tohma K, Lepore CJ, Gao Y, Ford-Siltz LA, Parra GI.

mBio. 2019 Sep 24;10(5). pii: e02202-19. doi: 10.1128/mBio.02202-19.


Updated classification of norovirus genogroups and genotypes.

Chhabra P, de Graaf M, Parra GI, Chan MC, Green K, Martella V, Wang Q, White PA, Katayama K, Vennema H, Koopmans MPG, Vinjé J.

J Gen Virol. 2019 Oct;100(10):1393-1406. doi: 10.1099/jgv.0.001318.


Analysis of GII.P7 and GII.6 noroviruses circulating in Italy during 2011-2016 reveals a replacement of lineages and complex recombination history.

Diakoudi G, Lanave G, Catella C, Medici MC, De Conto F, Calderaro A, Loconsole D, Chironna M, Bonura F, Giammanco GM, Bányai K, Tohma K, Parra GI, Martella V, De Grazia S.

Infect Genet Evol. 2019 Nov;75:103991. doi: 10.1016/j.meegid.2019.103991. Epub 2019 Aug 5.


Genomics Analyses of GIV and GVI Noroviruses Reveal the Distinct Clustering of Human and Animal Viruses.

Ford-Siltz LA, Mullis L, Sanad YM, Tohma K, Lepore CJ, Azevedo M, Parra GI.

Viruses. 2019 Mar 1;11(3). pii: E204. doi: 10.3390/v11030204.


Sequential Gastroenteritis Outbreaks in a Single Year Caused by Norovirus Genotypes GII.2 and GII.6 in an Institutional Setting.

Karangwa CK, Parra GI, Bok K, Johnson JA, Levenson EA, Green KY.

Open Forum Infect Dis. 2017 Oct 23;4(4):ofx236. doi: 10.1093/ofid/ofx236. eCollection 2017 Fall.


Neutralizing Antibody Responses to Homologous and Heterologous H1 and H3 Influenza A Strains After Vaccination With Inactivated Trivalent Influenza Vaccine Vary With Age and Prior-year Vaccination.

Wang W, Chen Q, Ford-Siltz LA, Katzelnick LC, Parra GI, Song HS, Vassell R, Weiss CD.

Clin Infect Dis. 2019 May 30;68(12):2067-2078. doi: 10.1093/cid/ciy818.


Vesicle-Cloaked Virus Clusters Are Optimal Units for Inter-organismal Viral Transmission.

Santiana M, Ghosh S, Ho BA, Rajasekaran V, Du WL, Mutsafi Y, De Jésus-Diaz DA, Sosnovtsev SV, Levenson EA, Parra GI, Takvorian PM, Cali A, Bleck C, Vlasova AN, Saif LJ, Patton JT, Lopalco P, Corcelli A, Green KY, Altan-Bonnet N.

Cell Host Microbe. 2018 Aug 8;24(2):208-220.e8. doi: 10.1016/j.chom.2018.07.006.


Evolutionary dynamics of non-GII genotype 4 (GII.4) noroviruses reveal limited and independent diversification of variants.

Tohma K, Lepore CJ, Ford-Siltz LA, Parra GI.

J Gen Virol. 2018 Aug;99(8):1027-1035. doi: 10.1099/jgv.0.001088. Epub 2018 Jun 19.


Complete Genome Sequence of a Nontypeable GII Norovirus Detected in Peru.

Tohma K, Saito M, Mayta H, Zimic M, Lepore CJ, Ford-Siltz LA, Gilman RH, Parra GI.

Genome Announc. 2018 Mar 8;6(10). pii: e00095-18. doi: 10.1128/genomeA.00095-18.


A Luciferase Immunoprecipitation System (LIPS) assay for profiling human norovirus antibodies.

Tin CM, Yuan L, Dexter RJ, Parra GI, Bui T, Green KY, Sosnovtsev SV.

J Virol Methods. 2017 Oct;248:116-129. doi: 10.1016/j.jviromet.2017.06.017. Epub 2017 Jul 1.


Phylogenetic Analyses Suggest that Factors Other Than the Capsid Protein Play a Role in the Epidemic Potential of GII.2 Norovirus.

Tohma K, Lepore CJ, Ford-Siltz LA, Parra GI.

mSphere. 2017 May 17;2(3). pii: e00187-17. doi: 10.1128/mSphereDirect.00187-17. eCollection 2017 May-Jun.


A large outbreak of acute gastroenteritis in Shippensburg, Pennsylvania, 1972 revisited: evidence for common source exposure to a recombinant GII.Pg/GII.3 norovirus.

Johnson JA, Parra GI, Levenson EA, Green KY.

Epidemiol Infect. 2017 Jun;145(8):1591-1596. doi: 10.1017/S0950268817000498. Epub 2017 Mar 15.


Identification of Human Junctional Adhesion Molecule 1 as a Functional Receptor for the Hom-1 Calicivirus on Human Cells.

Sosnovtsev SV, Sandoval-Jaime C, Parra GI, Tin CM, Jones RW, Soden J, Barnes D, Freeth J, Smith AW, Green KY.

mBio. 2017 Feb 14;8(1). pii: e00031-17. doi: 10.1128/mBio.00031-17.


Static and Evolving Norovirus Genotypes: Implications for Epidemiology and Immunity.

Parra GI, Squires RB, Karangwa CK, Johnson JA, Lepore CJ, Sosnovtsev SV, Green KY.

PLoS Pathog. 2017 Jan 19;13(1):e1006136. doi: 10.1371/journal.ppat.1006136. eCollection 2017 Jan.


Detection of novel GII.17 norovirus in Argentina, 2015.

Degiuseppe JI, Gomes KA, Hadad MF, Parra GI, Stupka JA.

Infect Genet Evol. 2017 Jan;47:121-124. doi: 10.1016/j.meegid.2016.11.026. Epub 2016 Nov 28.


Epidemiology of Norovirus Infection Among Immunocompromised Patients at a Tertiary Care Research Hospital, 2010-2013.

Bok K, Prevots DR, Binder AM, Parra GI, Strollo S, Fahle GA, Behrle-Yardley A, Johnson JA, Levenson EA, Sosnovtsev SV, Holland SM, Palmore TN, Green KY.

Open Forum Infect Dis. 2016 Sep 8;3(3):ofw169. eCollection 2016 Sep.


Mapping and modeling of a strain-specific epitope in the Norwalk virus capsid inner shell.

Parra GI, Sosnovtsev SV, Abente EJ, Sandoval-Jaime C, Bok K, Dolan MA, Green KY.

Virology. 2016 May;492:232-41. doi: 10.1016/j.virol.2016.02.019. Epub 2016 Mar 21.


Genetic linkage of capsid protein-encoding RNA segments in group A equine rotaviruses.

Miño S, Barrandeguy M, Parreño V, Parra GI.

J Gen Virol. 2016 Apr;97(4):912-921. doi: 10.1099/jgv.0.000397. Epub 2016 Jan 11.


Llama nanoantibodies with therapeutic potential against human norovirus diarrhea.

Garaicoechea L, Aguilar A, Parra GI, Bok M, Sosnovtsev SV, Canziani G, Green KY, Bok K, Parreño V.

PLoS One. 2015 Aug 12;10(8):e0133665. doi: 10.1371/journal.pone.0133665. eCollection 2015.


Genome of Emerging Norovirus GII.17, United States, 2014.

Parra GI, Green KY.

Emerg Infect Dis. 2015 Aug;21(8):1477-9. doi: 10.3201/eid2108.150652.


Genetic diversity of G3 rotavirus strains circulating in Argentina during 1998-2012 assessed by full genome analyses.

Degiuseppe JI, Parra GI, Stupka JA.

PLoS One. 2014 Oct 22;9(10):e110341. doi: 10.1371/journal.pone.0110341. eCollection 2014.


Genomic characterization of a rotavirus G8P[1] detected in a child with diarrhea reveal direct animal-to-human transmission.

Martinez M, Phan TG, Galeano ME, Russomando G, Parreno V, Delwart E, Parra GI.

Infect Genet Evol. 2014 Oct;27:402-7. doi: 10.1016/j.meegid.2014.08.015. Epub 2014 Aug 25.


Whole-genome analyses reveals the animal origin of a rotavirus G4P[6] detected in a child with severe diarrhea.

Martinez M, Galeano ME, Akopov A, Palacios R, Russomando G, Kirkness EF, Parra GI.

Infect Genet Evol. 2014 Oct;27:156-62. doi: 10.1016/j.meegid.2014.07.020. Epub 2014 Jul 27.


Sequential gastroenteritis episodes caused by 2 norovirus genotypes.

Parra GI, Green KY.

Emerg Infect Dis. 2014 Jun;20(6):1016-8. doi: 10.3201/eid2006.131627.


Genetic characterization of feline calicivirus strains associated with varying disease manifestations during an outbreak season in Missouri (1995-1996).

Prikhodko VG, Sandoval-Jaime C, Abente EJ, Bok K, Parra GI, Rogozin IB, Ostlund EN, Green KY, Sosnovtsev SV.

Virus Genes. 2014 Feb;48(1):96-110. doi: 10.1007/s11262-013-1005-0. Epub 2013 Nov 12.


Molecular epidemiology of norovirus strains in Paraguayan children during 2004-2005: description of a possible new GII.4 cluster.

Galeano ME, Martinez M, Amarilla AA, Russomando G, Miagostovich MP, Parra GI, Leite JP.

J Clin Virol. 2013 Oct;58(2):378-84. doi: 10.1016/j.jcv.2013.07.008. Epub 2013 Aug 7.


Identification of a Broadly Cross-Reactive Epitope in the Inner Shell of the Norovirus Capsid.

Parra GI, Azure J, Fischer R, Bok K, Sandoval-Jaime C, Sosnovtsev SV, Sander P, Green KY.

PLoS One. 2013 Jun 21;8(6):e67592. doi: 10.1371/journal.pone.0067592. Print 2013.


Development of Norwalk virus-specific monoclonal antibodies with therapeutic potential for the treatment of Norwalk virus gastroenteritis.

Chen Z, Sosnovtsev SV, Bok K, Parra GI, Makiya M, Agulto L, Green KY, Purcell RH.

J Virol. 2013 Sep;87(17):9547-57. doi: 10.1128/JVI.01376-13. Epub 2013 Jun 19.


Phylogenetic analyses of typical bovine rotavirus genotypes G6, G10, P[5] and P[11] circulating in Argentinean beef and dairy herds.

Badaracco A, Garaicoechea L, Matthijnssens J, Louge Uriarte E, Odeón A, Bilbao G, Fernandez F, Parra GI, Parreño V.

Infect Genet Evol. 2013 Aug;18:18-30. doi: 10.1016/j.meegid.2013.04.023. Epub 2013 Apr 26.


Complete genome analyses of G4P[6] rotavirus detected in Argentinean children with diarrhoea provides evidence of interspecies transmission from swine.

Degiuseppe JI, Beltramino JC, Millán A, Stupka JA, Parra GI.

Clin Microbiol Infect. 2013 Aug;19(8):E367-71. doi: 10.1111/1469-0691.12216. Epub 2013 Apr 15.


Viral load of human bocavirus-1 in stools from children with viral diarrhoea in Paraguay.

Proenca-Modena JL, Martinez M, Amarilla AA, Espínola EE, Galeano ME, Fariña N, Russomando G, Aquino VH, Parra GI, Arruda E.

Epidemiol Infect. 2013 Dec;141(12):2576-80. doi: 10.1017/S095026881300023X. Epub 2013 Feb 21.


The feline calicivirus leader of the capsid protein is associated with cytopathic effect.

Abente EJ, Sosnovtsev SV, Sandoval-Jaime C, Parra GI, Bok K, Green KY.

J Virol. 2013 Mar;87(6):3003-17. doi: 10.1128/JVI.02480-12. Epub 2012 Dec 26.


Genetic characterization of a reptilian calicivirus (Cro1).

Sandoval-Jaime C, Parra GI, Smith AW, Green KY, Sosnovtsev SV.

Virol J. 2012 Nov 29;9:297. doi: 10.1186/1743-422X-9-297.


IFN-γ signaling to astrocytes protects from autoimmune mediated neurological disability.

Hindinger C, Bergmann CC, Hinton DR, Phares TW, Parra GI, Hussain S, Savarin C, Atkinson RD, Stohlman SA.

PLoS One. 2012;7(7):e42088. doi: 10.1371/journal.pone.0042088. Epub 2012 Jul 27.


Multiple antigenic sites are involved in blocking the interaction of GII.4 norovirus capsid with ABH histo-blood group antigens.

Parra GI, Abente EJ, Sandoval-Jaime C, Sosnovtsev SV, Bok K, Green KY.

J Virol. 2012 Jul;86(13):7414-26. doi: 10.1128/JVI.06729-11. Epub 2012 Apr 24.


Immunogenicity and specificity of norovirus Consensus GII.4 virus-like particles in monovalent and bivalent vaccine formulations.

Parra GI, Bok K, Taylor R, Haynes JR, Sosnovtsev SV, Richardson C, Green KY.

Vaccine. 2012 May 21;30(24):3580-6. doi: 10.1016/j.vaccine.2012.03.050. Epub 2012 Mar 31.


Increased frequency of rotavirus G3P[8] and G12P[8] in Argentina during 2008-2009: whole-genome characterization of emerging G12P[8] strains.

Stupka JA, Degiuseppe JI, Parra GI; Argentinean National Rotavirus Surveillance Network.

J Clin Virol. 2012 Jun;54(2):162-7. doi: 10.1016/j.jcv.2012.02.011. Epub 2012 Mar 10.


Shifting hierarchies of interleukin-10-producing T cell populations in the central nervous system during acute and persistent viral encephalomyelitis.

Puntambekar SS, Bergmann CC, Savarin C, Karp CL, Phares TW, Parra GI, Hinton DR, Stohlman SA.

J Virol. 2011 Jul;85(13):6702-13. doi: 10.1128/JVI.00200-11. Epub 2011 Apr 27.


Chimpanzees as an animal model for human norovirus infection and vaccine development.

Bok K, Parra GI, Mitra T, Abente E, Shaver CK, Boon D, Engle R, Yu C, Kapikian AZ, Sosnovtsev SV, Purcell RH, Green KY.

Proc Natl Acad Sci U S A. 2011 Jan 4;108(1):325-30. doi: 10.1073/pnas.1014577107. Epub 2010 Dec 20.


Predominance of rotavirus G2P[4] and emergence of G12P[9] strains in Asunción, Paraguay, 2006-2007.

Martínez M, Amarilla AA, Galeano ME, Aquino VH, Fariña N, Russomando G, Parra GI.

Arch Virol. 2010 Apr;155(4):525-33. doi: 10.1007/s00705-010-0617-0. Epub 2010 Mar 7.


Gamma interferon signaling in oligodendrocytes is critical for protection from neurotropic coronavirus infection.

Parra GI, Bergmann CC, Phares TW, Hinton DR, Atkinson R, Stohlman SA.

J Virol. 2010 Mar;84(6):3111-5. doi: 10.1128/JVI.02373-09. Epub 2009 Dec 30.


National Rotavirus Surveillance in Argentina: high incidence of G9P[8] strains and detection of G4P[6] strains with porcine characteristics.

Stupka JA, Carvalho P, Amarilla AA, Massana M, Parra GI; Argentinean National Surveillance Network for Diarrheas.

Infect Genet Evol. 2009 Dec;9(6):1225-31. doi: 10.1016/j.meegid.2009.07.002. Epub 2009 Jul 23.


Target-dependent B7-H1 regulation contributes to clearance of central nervous system infection and dampens morbidity.

Phares TW, Ramakrishna C, Parra GI, Epstein A, Chen L, Atkinson R, Stohlman SA, Bergmann CC.

J Immunol. 2009 May 1;182(9):5430-8. doi: 10.4049/jimmunol.0803557.


[Molecular characterization of calicivirus strains detected in outbreaks of gastroenteritis occurring in Argentina during 2005 and 2006].

Gomes KA, Stupka JA, Diana A, Parra GI.

Rev Argent Microbiol. 2008 Oct-Dec;40(4):222-8. Spanish.


Seasonal shifts of group A rotavirus strains as a possible mechanism of persistence in the human population.

Parra GI.

J Med Virol. 2009 Mar;81(3):568-71. doi: 10.1002/jmv.21423.


IL-15 independent maintenance of virus-specific CD8(+) T cells in the CNS during chronic infection.

Zuo J, Stohlman SA, Parra GI, Bergmann CC.

J Neuroimmunol. 2009 Feb 15;207(1-2):32-8. doi: 10.1016/j.jneuroim.2008.11.005. Epub 2008 Dec 23.


Sequence and phylogenetic analysis of the VP4 gene of human rotaviruses isolated in Paraguay.

Espínola EE, Amarilla A, Arbiza J, Parra GI.

Arch Virol. 2008;153(6):1067-73. doi: 10.1007/s00705-008-0096-8. Epub 2008 May 8.


Genetic diversity of the VP4 and VP7 genes affects the genotyping of rotaviruses: analysis of Paraguayan strains.

Espínola EE, Parra GI, Russomando G, Arbiza J.

Infect Genet Evol. 2008 Jan;8(1):94-9. Epub 2007 Aug 25.


Molecular characterization of calicivirus strains detected in outbreaks of gastroenteritis in Argentina.

Gomes KA, Stupka JA, Gómez J, Parra GI.

J Med Virol. 2007 Nov;79(11):1703-9.


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