Current COVID-19 Vaccines are Great. Can They be Better?

The current vaccines against COVID-19 that have been authorized, particularly the Moderna and Pfizer-BioNTech vaccines, use new technology and have demonstrated about 95% efficacy in clinical trials and so far, about 90% efficacy in a real-world setting. Other vaccines in the Western World, including AstraZeneca-Oxford and Johnson & Johnson, which use slightly more traditional technologies, are also extremely effective.
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