Search results for "Vaccination."
showing 10 items of 654 documents
IgG Fc sialylation is regulated during the germinal center reaction following immunization with different adjuvants
2020
Background: Effector functions of IgG Abs are regulated by their Fc N-glycosylation pattern. IgG Fc glycans that lack galactose and terminal sialic acid residues correlate with the severity of inflammatory (auto)immune disorders and have also been linked to protection against viral infection and discussed in the context of vaccine-induced protection. In contrast, sialylated IgG Abs have shown immunosuppressive effects.Objective: We sought to investigate IgG glycosylation programming during the germinal center (GC) reaction following immunization of mice with a foreign protein antigen and different adjuvants.Methods: Mice were analyzed for GC T-cell, B-cell, and plasma cell responses, as wel…
Production of interleukin-6, tumor necrosis factor α and interleukin-10 in vitro correlates with the clinical immune defect in chronic hemodialysis p…
1995
Production of interleukin-6, tumor necrosis factor α and interleukin-10 in vitro correlates with the clinical immune defect in chronic hemodialysis patients. In patients with chronic renal failure alterations in monokine production are a common feature. Their clinical relevance has not yet been proven. We show here a correlation between an overproduction of interleukin-(IL)-6 and tumor necrosis factor alpha (TNFα) upon stimulation with LPS by mononuclear cells in vitro and the clinical grade of immunodeficiency found in these patients. Higher levels of IL-6 and TNFα were correlated with an immunocompromized state, that is, non-responsiveness to hepatitis B vaccination, whereas patients with…
Management of infections pre- and post-liver transplantation: Report of an AISF consensus conference
2014
SummaryThe burden of infectious diseases both before and after liver transplantation is clearly attributable to the dysfunction of defensive mechanisms of the host, both as a result of cirrhosis, as well as the use of immunosuppressive agents.The present document represents the recommendations of an expert panel commended by the Italian Association for the Study of the Liver (AISF), on the prevention and management of infectious complications excluding hepatitis B, D, C, and HIV in the setting of liver transplantation.Due to a decreased response to vaccinations in cirrhosis as well as within the first six months after transplantation, the best timing for immunization is likely before transp…
Prevalence of unwillingness and uncertainty to vaccinate against COVID-19 in older people: A systematic review and meta-analysis.
2021
The coronavirus disease 2019 (COVID-19) has been shown to have more severe health outcomes in older people specifically in relation to mortality and disability. Vaccination seems to be efficacious and safe for preventing the negative consequences of COVID-19, but vaccine hesitancy seems to be high in older adults. We therefore aimed to investigate the prevalence of unwillingness and the uncertainty to vaccinate against COVID-19 in older people and the factors that can be associated with the unwillingness to vaccinate. For this work, we searched several databases until 18th June 2021 for studies reporting the prevalence of unwillingness and the uncertainty to vaccinate against COVID-19 in pe…
[Vaccination against papillomavirus : arguments and evidence of effectiveness].
2020
Vaccination against papillomavirus: arguments and evidence of effectiveness. Vaccination against human papillomavirus is a major advance in the prevention of cervical cancer. Evidence of its effectiveness has accumulated over the past thirty years since basic research has demonstrated the ability of viral pseudoparticles to induce immune responses in animals. Large human clinical trials followed to demonstrate the safety and efficacy of vaccination against targeted HPV infections and their associated lesions. After its approval and marketing the vaccine efficacy was measured at the level of entire populations, confirming its effectiveness and medical interest. Today, models predict a possib…
Maternal antibodies contribute to sex-based difference in hantavirus transmission dynamics
2013
Individuals often differ in their ability to transmit disease and identifying key individuals for transmission is a major issue in epidemiology. Male hosts are often thought to be more important than females for parasite transmission and persistence. However, the role of infectious females, particularly the transient immunity provided to offspring through maternal antibodies (MatAbs), has been neglected in discussions about sex-biased infection transmission. We examined the effect of host sex upon infection dynamics of zoonotic Puumala hantavirus (PUUV) in semi-natural, experimental populations of bank vole ( Myodes glareolus ). Populations were founded with either females or males that we…
Mandatory vaccinations in European countries, undocumented information, false news and the impact on vaccination uptake: the position of the Italian …
2018
Abstract Background High rates of vaccination coverage are important in preventing infectious diseases. Enforcing mandatory vaccinations is one of the strategies that some Countries adopted to protect the community when vaccination coverage is not satisfactory. In Italy, in 2017 vaccination against diphtheria, tetanus, pertussis, hepatitis B, poliovirus, Haemophilus influenzae type b, measles, mumps, rubella and varicella became compulsory in childhood. In order to contrast vaccination policies, anti-vaccination campaigns contribute to the spread of fake news. Among them, there is the false information that Italy is the only one country with mandatory vaccination policy. Aim of our study is…
Hospitalisation of children aged 0-59 months with rotavirus gastro-enteritis before the introduction of routine vaccination (Sicily 2003-2012).
2015
Background: Recent evidence demonstrates that rotavirus vaccination is the best strategy for reducing rotavirus gastro-enteritis (RVGE) in young children. Aims: This study describes the epidemiology of RVGE hospitalisation of Sicilian children before universal rotavirus vaccination was introduced into the regional immunisation programme in January 2013. Methods: An observational study was undertaken by analyzing data obtained from the Regional Hospital Discharge database, including hospitalisation from 2003 to 2012 of subjects aged 0-59 months who lived in Sicily. Children discharged with the rotavirus-specific ICD-9-CM code of 008·61 on first or any diagnosis stage were considered to be RV…
Trends of influenza B during the 2010–2016 seasons in 2 regions of north and south Italy: The impact of the vaccine mismatch on influenza immunisatio…
2017
Influenza A and B viruses are responsible for respiratory infections, representing globally seasonal threats to human health. The 2 viral types often co-circulate and influenza B plays an important role in the spread of infection. A 6-year retrospective surveillance study was conducted between 2010 and 2016 in 2 large administrative regions of Italy, located in the north (Liguria) and in the south (Sicily) of the country, to describe the burden and epidemiology of both B/Victoria and B/Yamagata lineages in different healthcare settings. Influenza B viruses were detected in 5 of 6 seasonal outbreaks, exceeding influenza A during the season 2012–2013. Most of influenza B infections were found…
Pediatric routine vaccinations in the COVID 19 lockdown period: the survey of the Italian Pediatric Society
2021
Abstract Background COVID-19 pandemic was responsible for disrupting routine immunization activities all over the world. Aim of the study was to investigate the reduced adherence to the national children vaccination schedule during the lockdown period in Italy. Materials and methods Through social channels, the Italian Pediatric Society conducted a survey among Italian families on children vaccination during lockdown period. Results In the study period, 1474 responders were collected. More than one third (34%) of them skipped the vaccine appointment as they were afraid of SARS-CoV-2-virus (44%), vaccination services postponed the appointment (42%) or was closed to public (13%). Discussion R…