To determine the prevalence of influenza vaccination in chronic obstructive pulmonary disease (COPD) patients and its effect on COPD exacerbations, we conducted a retrospective population-based cohort study analyzing real-life data. We included all registered COPD patients ≥40 years old using respiratory medication during the study period (2012-2013). Influenza vaccination during the 2012/2013 campaign was the parameter studied. Moderate and severe exacerbations during 2013 were the dependent outcome variables. Logistic regression adjusting for age, gender, concomitant asthma diagnosis, COPD severity, smoking status, number of moderate and severe exacerbations the previous year, and comorbidities was performed, and 59.6% of the patients received seasonal influenza vaccination. The percentage of patients with exacerbations was higher among those vaccinated. Influenza vaccination had a statistically significantly negative (non-protective) crude effect favoring the risk of severe exacerbations: OR: 1.20 (95% CI; 1.05-1.37). This association diminished and lost statistical significance after adjustment: aOR: 0.93 (95% CI; 0.74-1.18). The protective effect in the analysis restricted to the epidemic period was not significant: aOR: 0.82 (95% CI; 0.58-1.16). We concluded that prevalence of influenza vaccination was suboptimal. In contrast with most of the available evidence, our results did not support a protective effect of influenza vaccination on the risk of admission for COPD exacerbation.
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http://dx.doi.org/10.3390/ijerph17114027 | DOI Listing |
mBio
December 2024
Center for Vaccine Innovation, La Jolla Institute for Immunology (LJI), La Jolla, California, USA.
Frequent recent spillovers of subtype H5N1 clade 2.3.4.
View Article and Find Full Text PDFAvian influenza is not a new disease, but the emergence of high pathogenicity avian influenza (HPAI) viruses of the A/Goose/Guangdong/1/96 lineage (Gs/GD) has necessitated fundamental changes to prevention and control strategies for this disease. No longer just an avian disease, avian influenza is capable of causing severe disease in humans and is considered a potential human pandemic threat requiring One Health approaches. In addition, Gs/GD HPAI viruses have developed the capacity to be carried across and between continents by migratory birds.
View Article and Find Full Text PDFRev Sci Tech
December 2024
H5Nx A/Goose/Guangdong/1/96 Eurasian lineage high pathogenicity avian influenza (HPAI) viruses have been the main HPAI strains detected globally since 2005. These have spread around the world, causing a panzootic that has spanned six continents, with continual threat to not only wild and captive birds and poultry, but also wild, captive and domestic mammals and humans. The viruses' ecology and epidemiology - especially the 2.
View Article and Find Full Text PDFTravel Med Infect Dis
December 2024
Department of Anesthesiology, the Third Hospital of Nanchang, Nanchang, Jiangxi, China. Electronic address:
Background: There is substantial epidemiological evidence demonstrating that influenza contributes to cardiovascular events in patients who already have cardiovascular diseases. However, it is unclear the extent to which influenza vaccination influences the prognosis of patients with ischemic heart disease (IHD).
Methods: We conducted a search for eligible randomized controlled trials (RCTs) in PubMed, Cochrane, and Embase on March 11, 2024, to investigate the effect of the influenza vaccine on the prognosis of patients with IHD.
Vaccine
December 2024
Department of Preventive Veterinary Medicine, Veterinary School, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil. Electronic address:
In Brazil, at least four lineages of influenza A virus circulate pig population: 2009 H1N1 flu pandemic (pH1N1), human-seasonal origin H3N2, H1N1 and H1N2 (huH1 lineages) viruses. Studies related to the occurrence of swine influenza A virus (SIAV) in Brazilian herds have been detecting an increase of occurrence of huH1 lineages. This study aimed to construct recombinant vaccines against the huH1N1 virus and test the immunogens in a murine model.
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