Detection of Influenza A/H1N1-Specific Human IgG-Secreting B Cells in Older Adults by ELISPOT Assay

Viral Immunology Mar 2014, Vol. 27, No. 2: 32-38.
Source: Viral Immunology - Category: Allergy & Immunology Tags: article Source Type: research

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In conclusion, children younger than 5 years, especially boys, were vulnerable groups for pandemic influenza, presenting as a mild disease with low mortality and few complications. Most of the affected children with influenza did not have important risk factors such as asthma and obesity, highlighted by other authors as significant risk factors. PMID: 31969753 [PubMed - in process]
Source: Acta Clinica Croatica - Category: General Medicine Tags: Acta Clin Croat Source Type: research
Publication date: Available online 22 January 2020Source: Journal de Mycologie MédicaleAuthor(s): Arghadip Samaddar, Anuradha Sharma, Twishi ShrimaliAbstractAcrophialophora fusispora is a soil-borne fungus rarely implicated in human infections. Here, we report a case of pulmonary infection due to A. fusispora in a 59-year-old male who presented with productive cough and gradually progressive dyspnoea for 20 days. He had a past history of pulmonary tuberculosis and was a known case of chronic obstructive pulmonary disease for past five years. He was diagnosed with mixed connective tissue disease and had been receivin...
Source: Journal of Medical Mycology - Category: Biology Source Type: research
In this study, two recombinant Lactobacillus plantarum strains expressing hemagglutinin (HA) alone or coexpressing aCD11c-HA to target HA protein to dendritic cells (DCs) by fusion to an anti-CD11c single-chain antibody (aCD11c) were constructed. The activation of bone marrow dendritic cells (BMDCs) by recombinant strains and the interaction of activated BMDCs and sorted CD4+ or CD8+ T cells were evaluated through flow cytometry in vitro, and cellular supernatants were assessed by using an enzyme-linked immunosorbent assay kit. The results demonstrated that, compared to the HA strain, the aCD11c-HA strain significantly inc...
Source: Infection and Immunity - Category: Infectious Diseases Authors: Tags: Microbial Immunity and Vaccines Source Type: research
CONCLUSION: These results suggest moderate effectiveness of influenza vaccination against A(H1N1)pdm09 and low effectiveness against A(H3N2) influenza in the 2018-2019 season. Vaccination in prior seasons maintained a notable protective effect. Strains included in previous vaccines were as effective as the current vaccine strain, and both added their effects against influenza A(H1N1)pdm09. PMID: 31982263 [PubMed - as supplied by publisher]
Source: Vaccine - Category: Allergy & Immunology Authors: Tags: Vaccine Source Type: research
In this study, mouse pulmonary stem/progenitor cells (mPSCs) with capability to differentiate into type I or type II alveolar cells were used as an in vitro cell model to characterize replication and pathogenic effects of influenza viruses in PSCs. First, mPSCs and its immortalized cell line mPSCsOct4+ were shown to be susceptible to PR8, seasonal H1N1, 2009 pandemic H1N1, and H7N9 influenza viruses and can generate infectious virus particles, although with a lower virus titer, which could be attributed by the reduced vRNA replication and nucleoprotein (NP) aggregation in the cytoplasm. Nevertheless, a significant increase...
Source: Frontiers in Microbiology - Category: Microbiology Source Type: research
This study suggests that chronic arsenite exposure could result in enhanced influenza infection in epithelial cells, and that this may be mediated through increased sialic acid binding. Finally, the decreased effectiveness of the anti‐influenza drug, oseltamivir, in arsenite‐exposed cells raises substantial public health concerns if this effect translates to arsenic‐exposed, influenza‐infected people.
Source: Journal of Applied Toxicology - Category: Toxicology Authors: Tags: RESEARCH ARTICLE Source Type: research
Respiratory tract infections are the second leading cause of mortality and morbidity worldwide1 and community acquired respiratory viruses (CARV) are the most common cause2. This statistic and the recent 2009 H1N1 influenza pandemic have raised awareness in national and transnational health authorities who support developing CARV epidemiological survey systems3 –6. These monitoring activities definitely contribute to health improvement and are extremely useful for national policy makers in identifying groups at high risk and for selecting influenza strains for yearly vaccine production.
Source: Journal of Infection - Category: Infectious Diseases Authors: Source Type: research
CONCLUSIONS: The LIPS method could differentiate between sera from experimentally infected and vaccinated animals. However, in human samples obtained more than 6 months after the pandemic, LIPS was specific, but not sufficiently sensitive for ascertaining cases by exposure. PMID: 31955522 [PubMed - as supplied by publisher]
Source: Respiratory Care - Category: Respiratory Medicine Authors: Tags: Influenza Other Respir Viruses Source Type: research
Flu season is always unpredictable. Different viral strains circulate each year, which makes forecasting the disease’s spread—and formulating the annual flu vaccine—an educated guessing game. Even so, the 2019-2020 flu season has been particularly unusual. Influenza B, the viral strain that usually circulates toward the end of flu season, instead emerged first this year, shifting usual transmission patterns. A vaccine mismatch and reduced immunity to influenza B may have contributed to the early and severe start of this flu season. What does that mean for the months ahead? TIME asked Lynnette Brammer, an ...
Source: TIME: Health - Category: Consumer Health News Authors: Tags: Uncategorized Infectious Disease Source Type: news
AbstractPrevious studies of fetal death with maternal influenza have been inconsistent. We explored the effect of maternal influenza-like illness (ILI) in pregnancy on the risk of fetal death, distinguishing between diagnoses during regular influenza seasons and the 2009/2010 pandemic and between trimesters of ILI. We used birth records from the Medical Birth Registry of Norway to identify fetal deaths after the first trimester in singleton pregnancies (2006 –2013). The Norwegian Directorate of Health provided dates of clinical influenza diagnoses by primary-health-care providers, whereas dates of laboratory-confirme...
Source: European Journal of Epidemiology - Category: Epidemiology Source Type: research
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