H2N2V1, Main, Merge, bibRecord, 001624

Influenza Virus Neuraminidase Contributes to Secondary Bacterial Pneumonia

Identifieur interne : 001624 ( Main/Merge ); précédent : 001623; suivant : 001625

Influenza Virus Neuraminidase Contributes to Secondary Bacterial Pneumonia

Auteurs : Ville T. Peltola ; K. Gopal Murti [États-Unis] ; Jonathan A. Mccullers

Source :

The Journal of Infectious Diseases [ 0022-1899 ] ; 2005.

RBID : ISTEX:D587CC152DC4685067505883F679482ED1939AE2

Abstract

Secondary bacterial pneumonia is a common cause of death during influenza epidemics. We hypothesized that virus-specific factors could contribute to differences in annual excess mortality. Recombinant influenza viruses with neuraminidases from representative strains from the past 50 years were created and characterized. The specific level of their neuraminidase activity correlated with their ability to support secondary bacterial pneumonia. Recombinant viruses with neuraminidases from 1957 and 1997 influenza strains had the highest level of activity, whereas a virus with the neuraminidase from a 1968 strain had the lowest level of activity. The high level of activity of the neuraminidase from the 1957 strain, compared with that of other neuraminidases, more strongly supported the adherence of Streptococcus pneumoniae and the development of secondary bacterial pneumonia in a mouse model. These data lend support to our hypothesis that the influenza virus neuraminidase contributes to secondary bacterial pneumonia and subsequent excess mortality

Url:

DOI: 10.1086/430954

Links to Exploration step

ISTEX:D587CC152DC4685067505883F679482ED1939AE2

Le document en format XML

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Influenza Virus Neuraminidase Contributes to Secondary Bacterial Pneumonia

Influenza Virus Neuraminidase Contributes to Secondary Bacterial Pneumonia

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