Results 21 to 30 of about 306,691 (236)

Integrating genotypes and phenotypes improves long-term forecasts of seasonal influenza A/H3N2 evolution

eLife, 2020
Seasonal influenza virus A/H3N2 is a major cause of death globally. Vaccination remains the most effective preventative. Rapid mutation of hemagglutinin allows viruses to escape adaptive immunity. This antigenic drift necessitates regular vaccine updates.
John Huddleston, John R Barnes, Thomas Rowe, Xiyan Xu, Rebecca Kondor, David E Wentworth, Lynne Whittaker, Burcu Ermetal, Rodney Stuart Daniels, John W McCauley, Seiichiro Fujisaki, Kazuya Nakamura, Noriko Kishida, Shinji Watanabe, Hideki Hasegawa, Ian Barr, Kanta Subbarao, Pierre Barrat-Charlaix, Richard A Neher, Trevor Bedford   +19 more
doaj   +1 more source

Identification and Characterization of Novel Antibody Epitopes on the N2 Neuraminidase

mSphere, 2021
The influenza virus neuraminidase is an emerging target for universal influenza virus vaccines. However, in contrast to influenza virus hemagglutinin, we know little about antibody epitopes and antigenic sites on the neuraminidase.
Ericka Kirkpatrick Roubidoux, Meagan McMahon, Juan Manuel Carreño, Christina Capuano, Kaijun Jiang, Viviana Simon, Harm van Bakel, Patrick Wilson, Florian Krammer   +8 more
doaj   +1 more source

Evidence for adaptive evolution in the receptor-binding domain of seasonal coronaviruses OC43 and 229e

eLife, 2021
Seasonal coronaviruses (OC43, 229E, NL63, and HKU1) are endemic to the human population, regularly infecting and reinfecting humans while typically causing asymptomatic to mild respiratory infections.
Kathryn E Kistler, Trevor Bedford
doaj   +1 more source

Antigenic drift in H5N1 avian influenza virus in poultry is driven by mutations in major antigenic sites of the hemagglutinin molecule analogous to those for human influenza virus [PDF]

, 2011
H5N1 highly pathogenic avian influenza virus has been endemic in poultry in Egypt since 2008, notwithstanding the implementation of mass vaccination and culling of infected birds.
Arafa, Abdel, Temperton, Nigel J., Giovanni Cattoli, Alessandra Buratin, Mona Meherez Aly, Adelaide Milani, Cattoli, Giovanni, Milani, Adelaide, Zecchin, Bianca, Ilaria Capua, Capua, Ilaria, Eleonora Molesti, Bianca Zecchin, Abdel Arafa, Buratin, Alessandra, Aly, Mona Meherez, Temperton, Nigel, Meherez Aly, Mona, Nigel Temperton, Molesti, Eleonora   +19 more
core   +1 more source

Influenza A gradual and epochal evolution: insights from simple models.

PLoS ONE, 2009
The recurrence of influenza A epidemics has originally been explained by a "continuous antigenic drift" scenario. Recently, it has been shown that if genetic drift is gradual, the evolution of influenza A main antigen, the haemagglutinin, is punctuated ...
Sébastien Ballesteros, Elisabeta Vergu, Bernard Cazelles   +2 more
doaj   +1 more source

A Bayesian approach to incorporate structural data into the mapping of genotype to antigenic phenotype of influenza A(H3N2) viruses.

PLoS Computational Biology, 2023
Surface antigens of pathogens are commonly targeted by vaccine-elicited antibodies but antigenic variability, notably in RNA viruses such as influenza, HIV and SARS-CoV-2, pose challenges for control by vaccination. For example, influenza A(H3N2) entered
William T Harvey, Vinny Davies, Rodney S Daniels, Lynne Whittaker, Victoria Gregory, Alan J Hay, Dirk Husmeier, John W McCauley, Richard Reeve   +8 more
doaj   +1 more source

Glycosylation focuses sequence variation in the influenza A virus H1 hemagglutinin globular domain. [PDF]

PLoS Pathogens, 2010
Antigenic drift in the influenza A virus hemagglutinin (HA) is responsible for seasonal reformulation of influenza vaccines. Here, we address an important and largely overlooked issue in antigenic drift: how does the number and location of glycosylation ...
Suman R Das, Pere Puigbò, Scott E Hensley, Darrell E Hurt, Jack R Bennink, Jonathan W Yewdell   +5 more
doaj   +1 more source

Hemagglutinin-specific neutralization of subacute sclerosing panencephalitis viruses. [PDF]

PLoS ONE, 2018
Subacute sclerosing panencephalitis (SSPE) is a progressive, lethal complication of measles caused by particular mutants of measles virus (MeV) that persist in the brain despite high levels of neutralizing antibodies.
Miguel Ángel Muñoz-Alía, Claude P Muller, Stephen J Russell   +2 more
doaj   +1 more source

Selection of neutralizing antibody escape mutants with type A influenza virus HA-specific polyclonal antisera: possible significance for antigenic drift [PDF]

, 1997
Ten antisera were produced in rabbits by two or three intravenous injections of inactivated whole influenza type A virions. All contained haemagglutination-inhibition (HI) antibody directed predominantly to an epitope in antigenic site B and, in addition,
Cleveland, S. Matthew, Dimmock, N. J., Taylor, H. P.   +2 more
core   +1 more source

Growth Kinetics of Influenza C Virus Antigenic Mutants That Escaped from Anti-Hemagglutinin Esterase Monoclonal Antibodies and Viral Antigenic Changes Found in Field Isolates

Viruses, 2021
The antigenicity of the hemagglutinin esterase (HE) glycoprotein of influenza C virus is known to be stable; however, information about residues related to antigenic changes has not yet been fully acquired.
Yoko Matsuzaki, Kanetsu Sugawara, Yoshitaka Shimotai, Yoko Kadowaki, Seiji Hongo, Katsumi Mizuta, Hidekazu Nishimura   +6 more
doaj   +1 more source