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Related Concept Videos

Influenza01:27

Influenza

Influenza is an acute, highly communicable viral disease that affects the respiratory tract and is responsible for seasonal epidemics worldwide. Influenza A is the most prevalent type associated with widespread outbreaks and is subtyped based on two surface glycoproteins: hemagglutinin (H) and neuraminidase (N), as in H1N1. These glycoproteins are essential for viral infectivity, transmission, and immune recognition. Transmission occurs primarily through respiratory droplets and contaminated...
Vaccinations01:51

Vaccinations

Overview
Upper Respiratory Drugs: First and Second-Generation Antihistamines01:15

Upper Respiratory Drugs: First and Second-Generation Antihistamines

Antihistamines are a class of drugs widely used to alleviate the symptoms of allergies, such as sneezing, itching, and nasal congestion. They work by inhibiting the actions of histamine, which is released by immune cells in response to allergenic substances or tissue injuries.
Histamine binds to specific receptor sites, known as H1 receptors, on tissue cells, triggering inflammation and swelling. Antihistamines combat these effects by competing with histamine for these receptor sites. By...
Acute Pharyngitis01:30

Acute Pharyngitis

Introduction
Acute pharyngitis is the inflammation of the back of the throat (pharynx), commonly resulting in a sore throat. It is a frequently encountered condition that prompts individuals to seek medical advice.
Classification
Acute pharyngitis can be categorized based on its underlying cause:
Vaccines01:21

Vaccines

Vaccines are among the most effective tools in preventive medicine, designed to prepare the immune system to recognize and combat infectious agents. By introducing antigens—substances that the immune system identifies as foreign—vaccines stimulate an adaptive immune response that leads to immunological memory. This immunological memory enables the body to mount a faster and more effective response upon future exposures to the actual pathogen.Vaccines can be categorized based on the type of...
Arboviral Encephalitis01:25

Arboviral Encephalitis

Arboviral encephalitis refers to brain inflammation caused by arthropod-borne viruses, particularly those transmitted through mosquito vectors. Among these, West Nile virus (WNV), a member of the Flaviviridae family, is a significant public health concern. WNV is an enveloped, positive-sense, single-stranded RNA virus. Human infection typically begins when an infected mosquito introduces the virus into the dermis during feeding. The primary transmission cycle involves birds as amplifying hosts...

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Related Experiment Video

Updated: May 25, 2026

Intranasal Administration of Recombinant Influenza Vaccines in Chimeric Mouse Models to Study Mucosal Immunity
10:39

Intranasal Administration of Recombinant Influenza Vaccines in Chimeric Mouse Models to Study Mucosal Immunity

Published on: June 25, 2015

Adjuvanted influenza vaccines.

Nicola Principi1, Susanna Esposito

  • 1Department of Maternal and Pediatric Sciences, Università degli Studi di Milano, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy. nicola.principi@unimi.it

Human Vaccines & Immunotherapeutics
|January 19, 2012
PubMed
Summary

New adjuvants aim to improve influenza vaccine protection, especially for those with weaker immune responses. While some new adjuvants are approved, their superiority over traditional vaccines requires more robust clinical trial data.

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Last Updated: May 25, 2026

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Expression and Purification of Virus-like Particles for Vaccination

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Area of Science:

  • Immunology
  • Vaccinology
  • Infectious Diseases

Background:

  • Conventional influenza vaccines with aluminum salt adjuvants show limitations in efficacy for certain populations.
  • There is a growing need for improved influenza vaccine adjuvants to enhance immune responses.

Purpose of the Study:

  • To review existing and emerging adjuvants for influenza vaccines.
  • To discuss their characteristics, advantages, and current development status.

Main Methods:

  • Literature review of studies on influenza vaccine adjuvants.
  • Analysis of immunogenicity data and clinical trial findings.
  • Discussion of adjuvants in human use versus experimental stages.

Main Results:

  • Several new adjuvants, including emulsions and virosomes, have been developed and some are registered for human use.
  • Evidence for the superiority of adjuvanted vaccines over conventional ones is primarily based on immunogenicity, lacking confirmation from large-scale clinical trials.
  • Data comparing different adjuvants in humans are limited and often conflicting.

Conclusions:

  • Adjuvanted influenza vaccines offer potential for enhanced protection, particularly in immunocompromised individuals.
  • Further rigorous clinical trials are necessary to validate the efficacy and safety of new adjuvants.
  • Ongoing research into novel adjuvant compounds continues to advance vaccine technology.