نتایج جستجو برای: h3n2
تعداد نتایج: 2670 فیلتر نتایج به سال:
The 2014/15 influenza season in the United Kingdom (UK) was characterised by circulation of predominantly antigenically and genetically drifted influenza A(H3N2) and B viruses. A universal paediatric influenza vaccination programme using a quadrivalent live attenuated influenza vaccine (LAIV) has recently been introduced in the UK. This study aims to measure the end-of-season influenza vaccine ...
Influenza A viruses (IAVs) are respiratory pathogens associated with an acute respiratory disease that occurs year-round in swine production. It is currently one of the most important pathogens in swine populations, with the potential to infect other host species including humans. Ongoing research indicates that the three major subtypes of IAV-H1N1, H1N2, and H3N2-continue to expand in their ge...
An off-season community influenza outbreak with high prevalence of amantadine-resistant influenza A/H3N2 occurred during September-October 2005 in Nagasaki Prefecture, Japan, prior to standard influenza circulation. A total of 48 patients with influenza-like-illness (ILI) visited a clinic during the outbreak and 27 (69.2%) of 39 ILI patients were positive for influenza A with rapid antigen test...
Canine influenza virus (CIV) is an etiologic agent of canine infectious respiratory disease (CIRD). In March of 2015, a strain of H3N2 subtype CIV, previously found only in Asia, emerged in Chicago, IL, USA. The virus triggered localized outbreaks of CIRD in Illinois, and rapidly spread to dogs in at least 30 different U.S. states. In response to this outbreak and the high probability that curr...
BACKGROUND: This study was conducted to determine the characteristics of various viral respiratory pathogens spreading during epidemic season 20212022 and frequency co-infection with SARS-CoV-2 influenza.
 AIM: To assess development influenza cases in patients acute infections between 2021 2022.
 MATERIALS AND METHODS: Traditional hospital epidemiological surveillance methods for were...
One hundred and one patients on haemodialysis, 21 patients on peritoneal dialysis and 30 healthy controls received a trivalent split vaccine containing 15 micrograms haemagglutinin of a recent influenza A-H3N2, influenza A-H1N1 and influenza B strain, respectively. Antibody production after four weeks was determined by the haemagglutination-inhibition test and expressed as response rate, protec...
BACKGROUND The 2014/15 influenza season in Canada was characterized by an early epidemic due to vaccine-mismatched influenza A(H3N2) viruses, disproportionately affecting elderly individuals ≥65-years-old. We assessed vaccine effectiveness (VE) against A(H3N2) hospitalization among elderly individuals during the peak weeks of the 2014/15 epidemic in Quebec, Canada. METHODS Nasal specimens and...
Influenza A viruses are endemic in many animal species, including humans, swine, and wild birds, and sporadic cases of transmission of influenza A viruses between humans and animals do occur, including human infections with avian-origin influenza A viruses (i.e., H5N1 and H7N7) and swine-origin influenza A viruses (i.e., H1N1, H1N2, and H3N2). Genetic analysis can distinguish animal origin infl...
BACKGROUND Previous studies have established that antibody titer measured by the hemagglutination-inhibiting (HAI) assay is correlated with protection against influenza virus infection, with an HAI titer of 1:40 generally associated with 50% protection. METHODS We recruited index cases with confirmed influenza virus infection from outpatient clinics, and followed up their household contacts f...
BACKGROUND Prior to detection of an antibody response toward influenza viruses using the hemagglutination inhibition assay (HAI), sera are routinely treated to inactivate innate inhibitors using both heat inactivation (56°C) and recombinant neuraminidase [receptor-destroying enzyme (RDE)]. OBJECTIVES We revisited the contributions of innate serum inhibitors toward interference with influenza ...
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