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Related Concept Videos

Vaccinations01:51

Vaccinations

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Overview
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Bias in Epidemiological Studies01:29

Bias in Epidemiological Studies

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Biases can arise at various stages of research, from study design and data collection to analysis and interpretation. Recognizing and addressing these biases is essential to ensure the validity and reliability of epidemiological findings.Broadly speaking, biases in epidemiology fall into three main categories: selection bias, information bias, and confounding. A more detailed description of possible biases is:  
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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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Types of Skewness01:09

Types of Skewness

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If the frequency distribution of a data set is more inclined towards smaller or larger values, the distribution is said to be skewed. If data values are skewed to the right, then the distribution is called positively skewed. Conversely, if the plot is skewed to the left, the distribution is called negatively skewed.
For instance, in the middle of a pandemic, the geographical distribution of vaccine coverage may be positively skewed towards populations in the global north countries. However,...
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Bioequivalence: Overview01:16

Bioequivalence: Overview

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Pharmaceutical equivalents, by definition, are drug products with the same active ingredient in the same quantities, encapsulated in identical dosage forms, and intended for the same administration routes. These pharmaceutical equivalents are deemed bioequivalent if the bioavailability of the active entity in the drug preparations is similar. Moreover, pharmaceutical equivalents demonstrating bioequivalence are also regarded as therapeutically equivalent. This means that when used as directed,...
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Confounding in Epidemiological Studies01:27

Confounding in Epidemiological Studies

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Confounding in statistical epidemiology represents a pivotal challenge, referring to the distortion in the perceived relationship between an exposure and an outcome due to the presence of a third variable, known as a confounder. This variable is associated with both the exposure and the outcome but is not a direct link in their causal chain. Its presence can lead to erroneous interpretations of the exposure's effect, either exaggerating or underestimating the true association. This...
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Global Vaccine Inequity.

Liz Seegert

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    Unequal access to COVID vaccines is extending the global pandemic. Addressing these disparities is crucial for controlling the virus and protecting public health worldwide.

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    Area of Science:

    • Public Health
    • Epidemiology
    • Vaccinology

    Background:

    • The COVID-19 pandemic continues to pose a significant global health threat.
    • Vaccine development has been rapid, but equitable distribution remains a challenge.

    Purpose of the Study:

    • To analyze the impact of varied access to COVID vaccines on pandemic duration.
    • To highlight the need for equitable global vaccine distribution strategies.

    Main Methods:

    • Analysis of global COVID vaccine distribution data.
    • Epidemiological modeling to assess pandemic trajectory based on access levels.

    Main Results:

    • Significant disparities in COVID vaccine access have been identified across different regions.
    • Uneven vaccine availability is directly correlated with prolonged pandemic waves and higher transmission rates.

    Conclusions:

    • Equitable access to COVID vaccines is essential for effectively controlling the pandemic.
    • Addressing distribution inequities is a critical step towards global health security and pandemic resolution.