![]() ![]() But what they can’t do anymore is prevent transmission.” “They continue to work well for Delta, with regard to severe illness and death – they prevent it. “Our vaccines are working exceptionally well,” Walensky told CNN’s Wolf Blitzer. (2021).Fully vaccinated people who get a Covid-19 breakthrough infection can transmit the virus, US Centers for Disease Control and Prevention Director Dr. Science brief: COVID-19 vaccines and vaccination.COVID-19 vaccine: A comprehensive status report. How do I find a COVID-19 vaccine or booster? (2022). ![]() Frequently asked questions about COVID-19 vaccination.Review of COVID-19 vaccine subtypes, efficacy and geographical distributions. Coronavirus disease (COVID-19): Vaccines.You can learn more about how we ensure our content is accurate and current by reading our editorial policy. We link primary sources - including studies, scientific references, and statistics - within each article and also list them in the resources section at the bottom of our articles. Medical News Today has strict sourcing guidelines and draws only from peer-reviewed studies, academic research institutions, and medical journals and associations. However, it does reduce the risk of contracting the virus and helps protect against severe COVID-19 symptoms and complications. The COVID-19 vaccine does not guarantee protection for everyone who takes it. ![]() Examples include the Pfizer vaccine, which is an RNA vaccine, and the Moderna vaccine, which is an mRNA vaccine.
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