Results 101 to 110 of about 2,212,038 (235)

The causes and consequences of changes in virulence following pathogen host shifts.

PLoS Pathogens, 2015
Emerging infectious diseases are often the result of a host shift, where the pathogen originates from a different host species. Virulence--the harm a pathogen does to its host-can be extremely high following a host shift (for example Ebola, HIV, and SARs)
Ben Longdon, Jarrod D Hadfield, Jonathan P Day, Sophia C L Smith, John E McGonigle, Rodrigo Cogni, Chuan Cao, Francis M Jiggins   +7 more
doaj   +1 more source

454-Pyrosequencing: A Molecular Battiscope for Freshwater Viral Ecology [PDF]

, 2010
Viruses, the most abundant biological entities on the planet, are capable of infecting organisms from all three branches of life, although the majority infect bacteria where the greatest degree of cellular diversity lies.
Ackermann, Alan J. McCarthy, Darren L. Smith, David J. Rooks, Foster, Heather E. Allison, James E. McDonald, Margulies, Martin J. Woodward, Ryan, Sambrook, Warren, White, Wilson   +13 more
core   +3 more sources

Bluetongue virus without NS3/NS3a expression is not virulent and protects against virulent bluetongue virus challenge

Journal of General Virology, 2014
Bluetongue is a disease in ruminants caused by the bluetongue virus (BTV), and is spread by Culicoides biting midges. Bluetongue outbreaks cause huge economic losses and death in sheep in several parts of the world. The most effective measure to control BTV is vaccination.
Feenstra, F., van Gennip, H.G.P., Maris-Veldhuis, M.A., Verheij, E., van Rijn, P.A.   +4 more
openaire   +2 more sources

Deletion of the vaccinia virus growth factor gene reduces virus virulence [PDF]

Journal of Virology, 1988
The vaccinia virus growth factor (VGF) gene encodes a polypeptide with amino acid sequence homology to epidermal growth factor (EGF) and transforming growth factor alpha and is present twice, once at each end of the virus genome within the inverted terminal repetition.
R M, Buller, S, Chakrabarti, J A, Cooper, D R, Twardzik, B, Moss   +4 more
openaire   +2 more sources

Pathogénicité du virus atténué de la peste des petits ruminants chez des moutons et des chèvres

Revue d’Elevage et de Médecine Vétérinaire des Pays Tropicaux, 1990
Avec les passages du virus PPR sur les cellules Vero, on a noté une diminution progressive de sa virulence vis-à-vis des chevreaux. Les chèvres inoculées avec le virus au 60e passage ont présenté la maladie clinique avec des cas de mortalité alors que ...
F.D. Adu, T. Joannis, E. Nwosuh, A. Abegunde   +3 more
doaj   +1 more source

A Comparison of the Vertical Transmission of High- and Low-Virulence Nucleopolyhedrovirus Strains in Lymantria Dispar L.

Insects, 2020
Baculoviruses can persist in insect host organisms after infection and may be vertically transmitted to the next generation, in which they may be reactivated.
Yuriy B. Akhanaev, Irina A. Belousova, Darya A. Lebedeva, Sergey V. Pavlushin, Vyacheslav V. Martemyanov   +4 more
doaj   +1 more source

Effect of mycoviruses on the virulence of Fusarium circinatum and laccase activity [PDF]

, 2016
Producción CientíficaLaccase enzymes (benzenediol: oxygen oxidoreductase, EC 1.10.3.2) play a major role in the degradation of phenolic compounds such as lignin.
Díez Casero, Julio Javier, Fernández Fernández, María Mercedes, Flores Pacheco, Juan Asdrúbal, Martín García, Jorge, Martínez Álvarez, Pablo, Muñoz Adalia, Emigdio Jordán   +5 more
core   +1 more source

Chikungunya Virus Strains Show Lineage-Specific Variations in Virulence and Cross-Protective Ability in Murine and Nonhuman Primate Models

mBio, 2018
Chikungunya virus (CHIKV) is a reemerging arbovirus capable of causing explosive outbreaks of febrile illness, polyarthritis, and polyarthralgia, inflicting severe morbidity on affected populations.
Rose M. Langsjoen, Sherry L. Haller, C. Roy, Heather Vinet-Oliphant, Nicholas A Bergren, Jesse H. Erasmus, Jill A. Livengood, T. Powell, S. Weaver, S. Rossi   +9 more
semanticscholar   +1 more source

Sheeppox Virus Kelch-Like Gene SPPV-019 Affects Virus Virulence [PDF]

Journal of Virology, 2007
ABSTRACT Sheeppox virus (SPPV), a member of the Capripoxvirus genus of the Poxviridae , is the etiologic agent of a significant disease of sheep in the developing world. Genomic analysis of pathogenic and vaccine capripoxviruses identified genes with potential roles in virulence and
Balinsky, C. A., Delhon, Gustavo A., Afonso, C. L., Risatti, G. R., Borca, M. V., French, R. A., Tulman, E. R., Geary, S. J., Rock, D. L.   +8 more
openaire   +2 more sources

Replication efficiency of oncolytic vaccinia virus in cell cultures prognosticates the virulence and antitumor efficacy in mice

Journal of Translational Medicine, 2011
Background We have shown that insertion of the three vaccinia virus (VACV) promoter-driven foreign gene expression cassettes encoding Renilla luciferase-Aequorea GFP fusion protein, β-galactosidase, and β-glucuronidase into the F14.5L, J2R, and A56R loci
Yu Yong A, Chen Nanhai G, Zhang Qian, Szalay Aladar A   +3 more
doaj   +1 more source