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Related Concept Videos

Vaccinations01:51

Vaccinations

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Overview
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Cancer Vaccines01:30

Cancer Vaccines

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Cancer treatment vaccines are a rapidly evolving field that offers a promising approach to immunotherapy. Unlike traditional vaccines that prevent diseases, cancer treatment vaccines are designed to treat existing cancers by stimulating the immune system to recognize and attack cancer cells.
Cancer vaccines come in two categories: preventive (prophylactic) and treatment (active). Preventive vaccines, such as the Human Papillomavirus (HPV) vaccine, protect against viruses that cause certain...
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Electrical Current01:10

Electrical Current

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Electrical current is defined as the rate at which charge flows. When there is a large current present, such as that used to run a refrigerator, a large amount of charge moves through the wire in a small amount of time. If the current is small, such as that used to operate a handheld calculator, a small amount of charge moves through the circuit over a long period of time. The SI unit for current is the ampere (A), named for the French physicist André-Marie Ampère (1775–1836).
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Current Density01:21

Current Density

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The total amount of current flowing through one unit value of a cross-sectional area is referred to as current density. If the current flow is uniform, the amount of current flowing through a conductor is the same at all points along the conductor, even if the conductor area varies. The current density consists of the local magnitude and direction of the charge flow, which varies from point to point. Current density is measured in amperes per meter square, and direction is defined as the net...
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Eddy Currents01:25

Eddy Currents

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Since eddy currents occur only in conductors, magnets can separate metals from other materials. For example, in a recycling center, trash is dumped in batches down a ramp, beneath which lies a powerful magnet. Conductors in the trash are slowed by eddy currents, while nonmetals in the trash move on, separating from the metals. This works for all metals, not just ferromagnetic ones.
Other major applications of eddy currents appear in metal detectors and the braking systems of trains and roller...
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Displacement Current01:19

Displacement Current

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Ampère's law, in its usual form, does not work in places where the current changes with time and is not steady. Thus, Maxwell suggested including an additional contribution, called the displacement current, Id, to the real conduction current I.
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Intranasal Administration of Recombinant Influenza Vaccines in Chimeric Mouse Models to Study Mucosal Immunity
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Current and future influenza vaccines.

Seiya Yamayoshi1, Yoshihiro Kawaoka2,3,4

  • 1Division of Virology, Department of Microbiology and Immunology, Institute of Medical Science, University of Tokyo, Tokyo, Japan.

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Influenza epidemics remain a significant threat despite current treatments. Advances in virus surveillance and sequence data analysis are paving the way for improved influenza vaccines and early detection of drug resistance.

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Area of Science:

  • Virology
  • Epidemiology
  • Vaccinology

Background:

  • Influenza epidemics pose ongoing public health and economic challenges, despite existing antiviral drugs and vaccines.
  • Recent scientific research has uncovered promising avenues for enhancing influenza control strategies.
  • Basic and clinical studies have provided crucial insights into influenza virus biology and pathogenesis.

Purpose of the Study:

  • To provide an overview of current influenza vaccine technologies.
  • To discuss ongoing research and development efforts for next-generation influenza vaccines.
  • To propose a strategic plan for creating an optimal influenza vaccine.

Main Methods:

  • Review of current scientific literature on influenza antivirals and vaccines.
  • Analysis of data from global virus surveillance programs.
  • Examination of public influenza virus sequence databases.
  • Evaluation of strategies for vaccine candidate selection and drug-resistance monitoring.

Main Results:

  • Virus surveillance and sequence data enable better vaccine strain selection and early detection of antiviral resistance.
  • Significant progress has been made in understanding influenza virus evolution and host interactions.
  • Current vaccine technologies have limitations, necessitating the development of improved options.

Conclusions:

  • Enhanced virus surveillance and genomic data are critical for effective influenza control.
  • Next-generation influenza vaccines hold the potential to offer broader and more durable protection.
  • A coordinated plan is needed to develop and implement an optimal influenza vaccine for global health security.