Results 21 to 30 of about 40,863 (219)

Seroepidemiologic Effects of Influenza A(H1N1)pdm09 in Australia, New Zealand, and Singapore

open access: yesEmerging Infectious Diseases, 2013
To estimate population attack rates of influenza A(H1N1)pdm2009 in the Southern Hemisphere during June–August 2009, we conducted several serologic studies. We pooled individual-level data from studies using hemagglutination inhibition assays performed in
James M. Trauer   +15 more
doaj   +1 more source

2019–2020 herd immunity to seasonal influenza viruses prior to epidemic season and rate of severe disease cases

open access: yesИнфекция и иммунитет, 2021
The aim was to analyze heard immunity against influenza viruses as well as severe course of influenza infection prior to the 2019–2020 epidemic season. Methods.
T. N. Ilyicheva   +8 more
doaj   +1 more source

Substitutions near the hemagglutinin receptor-binding site determine the antigenic evolution of influenza A H3N2 viruses in U.S. swine [PDF]

open access: yes, 2014
Swine influenza A virus is an endemic and economically important pathogen in pigs, with the potential to infect other host species. The hemagglutinin (HA) protein is the primary target of protective immune responses and the major component in swine ...
A. L. Vincent   +58 more
core   +2 more sources

Higher titers of some H5N1 and recent human H1N1 and H3N2 influenza viruses in Mv1 Lu vs. MDCK cells

open access: yesVirology Journal, 2011
Background The infectivity of influenza A viruses can differ among the various primary cells and continuous cell lines used for such measurements. Over many years, we observed that all things equal, the cytopathic effects caused by influenza A subtype ...
Daniels Deirdre E   +6 more
doaj   +1 more source

Phylogenetic Analysis of HA and NA Genes of Swine Influenza Viruses in Serbia in 2016-2018

open access: yesActa Veterinaria, 2020
Pigs are very important for the epidemiology of influenza A viruses, being commonly infected with the lineages of most adapted H1N1, H3N2, H1N2 swine subtypes.
Maksimović Zorić Jelena   +9 more
doaj   +1 more source

Diagnostic approach for the differentiation of the pandemic influenza A(H1N1)v virus from recent human influenza viruses by real-time PCR. [PDF]

open access: yesPLoS ONE, 2010
BACKGROUND: The current spread of pandemic influenza A(H1N1)v virus necessitates an intensified surveillance of influenza virus infections worldwide. So far, in many laboratories routine diagnostics were limited to generic influenza virus detection only.
Martin Schulze   +3 more
doaj   +1 more source

Distribution of influenza virus types by age using case-based global surveillance data from twenty-nine countries, 1999-2014

open access: yesBMC Infectious Diseases, 2018
Background Influenza disease burden varies by age and this has important public health implications. We compared the proportional distribution of different influenza virus types within age strata using surveillance data from twenty-nine countries during ...
Saverio Caini   +63 more
doaj   +1 more source

Mouse Models of Influenza Infection with Circulating Strains to Test Seasonal Vaccine Efficacy

open access: yesFrontiers in Immunology, 2018
Influenza virus infection is a significant cause of morbidity and mortality worldwide. The surface antigens of influenza virus change over time blunting both naturally acquired and vaccine induced adaptive immune protection.
Helen T. Groves   +11 more
doaj   +1 more source

Genesis and pathogenesis of the 1918 pandemic H1N1 influenza A virus [PDF]

open access: yes, 2014
The source, timing, and geographical origin of the 1918–1920 pandemic influenza A virus have remained tenaciously obscure for nearly a century, as have the reasons for its unusual severity among young adults.
A. Rambaut   +29 more
core   +2 more sources

Evolutionary Dynamics of 2009 Pandemic Influenza A Virus Subtype H1N1 in South Africa During 2009–2010 [PDF]

open access: yesThe Journal of Infectious Diseases, 2012
The 2009 pandemic influenza A virus subtype H1N1 (A[H1N1]pdm09) was first detected in June 2009 in South Africa and later resulted in extensive transmission throughout Africa. Established routine surveillance programs and collaboration between private and public sector laboratories allowed for comprehensive molecular epidemiological and antigenic ...
Venter, Marietjie   +8 more
openaire   +3 more sources

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