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Health literacy is an individual's or a community's capacity to comprehend, receive, read, and use relevant healthcare information and services. The World Health Organization (WHO, 2018) defines health literacy as the cognitive and social skills that determine the ability of individuals to gain access to, understand, and use information in ways that promote and maintain good health. As a result, the WHO helps individuals manage long-term health concerns, participate in preventative...
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Healthcare agencies provide healthcare services to people. In the United States, voluntary agencies are often non-profit centers sponsored by donations, grants, or fundraisers. One such organization is Meals on Wheels, which provides meals to the elderly and homebound. The American Heart Association and the American Lung Association are other non-profit community organizations. Doctors and nurses are frequently active members of these organizations, which offer health checks and educational...
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There are various healthcare agencies in the United States—some of which are managed by religious institutions and others by different government branches.
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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.
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Disease surveillance is the systematic collection, analysis, and interpretation of health data essential to the planning, implementation, and evaluation of public health practice. This process integrates data dissemination to entities responsible for preventing and controlling disease, injury, and disability. Surveillance systems provide crucial information for action, helping public health authorities make informed decisions to manage and prevent outbreaks, ensure public safety, optimize...
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Related Experiment Video

Updated: Sep 24, 2025

Dynamic Monitoring of Seroconversion using a Multianalyte Immunobead Assay for Covid-19
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COVID-19 vaccine website accessibility dashboard.

Grace Jo1, Daniel Habib1, Varshini Varadaraj2

  • 1Johns Hopkins Disability Health Research Center, Johns Hopkins University, 3400 N. Charles Street, Baltimore, MD, 21218, USA.

Disability and Health Journal
|May 9, 2022
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Summary

COVID-19 vaccine websites had accessibility barriers for people with disabilities. This highlights inequities in public health information access during the pandemic.

Keywords:
Barriers to accessing information and registering for COVID-19 vaccineCOVID-19 vaccineDisability inclusionHealth services for persons with disabilitiesWebsite accessibility of public health information

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Area of Science:

  • Public Health
  • Health Informatics
  • Disability Studies

Background:

  • The COVID-19 pandemic amplified existing inequities for individuals with disabilities.
  • Barriers to accessing online information and healthcare websites became evident, particularly during vaccine registration.

Purpose of the Study:

  • To assess the accessibility of U.S. state and territory websites providing COVID-19 information and vaccine registration.
  • To identify specific accessibility barriers faced by people with disabilities on these crucial public health platforms.

Main Methods:

  • A cross-sectional study analyzed COVID-19 information and vaccine registration web pages from 56 U.S. states and territories.
  • The WAVE Web Accessibility Evaluation Tool (WAVE) was used to identify barriers like insufficient contrast and unlabeled buttons.
  • Web pages were scored based on total errors, error density, and alerts, then ranked into accessibility groups.

Main Results:

  • All 56 states provided COVID-19 information pages; 29 offered centralized vaccine registration.
  • Median accessibility scores indicated significant barriers: 259 for information pages and 146 for registration pages.
  • Analysis revealed issues with contrast, alternative text, and button labeling across examined websites.

Conclusions:

  • The study identified substantial accessibility barriers on U.S. state COVID-19 websites for people with disabilities.
  • These findings underscore critical inequities in pandemic response and public health information dissemination.
  • Prioritizing website accessibility is essential for equitable access to health information and services for the disability community.