With the aid of monoclonal antibodies directed against a specific site on the hemagglutinin-neuraminidase surface glycoprotein, four mutants of the Kilham neurotropic strain of mumps virus were isolated. All four mutants had increased neuraminidase activity. Two mutants (M10 and M12) lost their hemagglutination capacity with human O erythrocytes but retained their ability to agglutinate guinea ...

Genetic recombination of influenza viruses of different subtype may result in segregation of hemagglutinin and neuraminidase in antigenically hybrid viruses [E. D. Kilbourne et al., in M. Pollard (ed.), Perspectives in Virology, vol. 5, p. 87, Academic Press, Inc., N.Y., 1967; and W. G. Laver and E. D. Kilbourne, Virology 30:493, 1966]. The selective use of such antigenic hybrids in serological...

Sequence analyses show that the outbreak of pandemic (H1N1) 2009 resulted from the spread of a recently derived hemagglutinin through a population of ancient and more diverse neuraminidase segments. This pattern implies reassortment and suggests that the novel form of hemagglutinin conferred a selective advantage.

Antiserum specific for influenza A2 neuraminidase was produced by immunization of rabbits with the purified enzyme which had been isolated by electrophoresis from the proteins of a detergent-disrupted AoA2 influenza virus recombinant [X-7 (Fl)]. This recombinant contained hemagglutinin of the Ao subtype and A2 neuraminidase. Antiserum to the isolated A2 neuraminidase did not react in any of fou...

Influenza poses a significant threat to public health, particularly among the elderly, young children, and people with underlying dis-eases. The manifestation of severe conditions, such as pneumonia, highlights importance preventing spread influenza. An accurate cost-effective prediction host antigenic sub-types influenza A viruses is essential addressing this issue, in resource-constrained reg...

background and aims: each year, the influenza virus causes moderate to severe infections with a high prevalence throughout the world. accordingly, an influenza vaccine that ensures protection with only a single dose would be a much more cost effective approach to influenza prophylaxis. generation of influenza non-replicating virus-like particles (vlp) in baculoviral expression system is an attr...

Highly pathogenic avian influenza H5N1 viruses have devastated the poultry industry in many countries of the eastern hemisphere. Occasionally H5N1 viruses cross the species barrier and infect humans, sometimes with a severe clinical outcome. When this happens, there is a chance of reassortment between H5N1 and human influenza viruses. To assess the potential of H5N1 viruses to reassort with con...

Background and Aims: Each year, the influenza virus causes moderate to severe infections with a high prevalence throughout the world. Accordingly, an influenza vaccine that ensures protection with only a single dose would be a much more cost effective approach to influenza prophylaxis. Generation of Influenza non-replicating virus-like particles (VLP) in baculoviral expression system is an attr...