Questions and Answers about the COVID-19 Vaccine

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This page offers both the general public and health practitioners answers to basic questions about the COVID-19 vaccine. The questions include:

  • Is there a vaccine for COVID-19?
  • When will COVID-19 vaccines be ready for distribution?
  • How likely is it that safe, effective vaccines for COVID-19 will be developed?
  • How quickly could COVID-19 vaccines stop the pandemic?
  • What types of COVID-19 vaccines are being developed? How would they work?
  • How will we know if COVID-19 vaccines are safe?
  • Will other vaccines help protect me from COVID-19?
  • Will COVID-19 vaccines provide long-term protection?

Source: Questions and Answers about the COVID-19 Vaccine

    How do Vaccines Work?

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    This page explains the body’s response to pathogens, how vaccines help, and herd immunity.

    Germs are all around us, both in our environment and in our bodies. When a person is susceptible and they encounter a harmful organism, it can lead to disease and death.

    The body has many ways of defending itself against pathogens (disease-causing organisms). Skin, mucus, and cilia (microscopic hairs that move debris away from the lungs) all work as physical barriers to prevent pathogens from entering the body in the first place.

    When a pathogen does infect the body, our body’s defences, called the immune system, are triggered and the pathogen is attacked and destroyed or overcome.

    Source: How do Vaccines Work?

      KAP COVID Dashboard: US and India Subnational View

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      This dashboard is a visualization of a study of knowledge, attitudes and practices around COVID-19 and is a collaboration among Johns Hopkins Center for Communication Programs, Facebook Data for Good, MIT, WHO and Global Outbreak Alert and Response Network.

      View the dashboard

        KAP COVID Dashboard: Individual Country Views

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        This dashboard is a visualization of a study of knowledge, attitudes and practices around COVID-19 and is a collaboration among Johns Hopkins Center for Communication Programs, Facebook Data for Good, MIT, WHO and Global Outbreak Alert and Response Network.

        View the dashboard

          KAP COVID Dashboard: Global and Regional View

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          This dashboard is a visualization of a study of knowledge, attitudes and practices around COVID-19 and is a collaboration among Johns Hopkins Center for Communication Programs, Facebook Data for Good, MIT, WHO and Global Outbreak Alert and Response Network.

          View the dashboard

            Vaccine Confidence: A Global Analysis Exploring Volatility, Polarization, and Trust

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            This study reports that there is growing evidence of vaccine delays or refusals due to a lack of trust in the importance, safety, or effectiveness of vaccines, alongside persisting access issues. Although immunization coverage is reported administratively across the world, no similarly robust monitoring system exists for vaccine confidence. In this study, vaccine confidence was mapped across 149 countries between 2015 and 2019.

            The study’s findings highlight the importance of regular monitoring to detect emerging trends to prompt interventions to build and sustain vaccine confidence.

            Source: Vaccine Confidence: A Global Analysis Exploring Volatility, Polarization, and Trust

              Gearing Up for Effective COVID-19 Vaccine Communication

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              This article offers tips to prepare for effective COVID-19 vaccine communication.

              The tips are:

              • Resist the urge to overpromise.
              • Be honest about what we don’t know.
              • Stick to solid ground.
              • Build trust in the process.
              • Go back to basics.

              Source: Gearing Up for Effective COVID-19 Vaccine Communication