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Nasal vaccines promise to stop the COVID-19 virus before it gets to the lungs – an immunologist explains how they work

  • Written by Michael W. Russell, Professor Emeritus of Microbiology and Immunology, University at Buffalo
Nasal vaccines promise to stop the COVID-19 virus before it gets to the lungs – an immunologist explains how they workNasal vaccines for COVID-19 are still in early development.Paul Biris/Moment via Getty Images

The Pfizer-BioNTech and Moderna mRNA vaccines have played a large role in preventing deaths and severe infections from COVID-19. But researchers are still in the process of developing alternative approaches to vaccines to improve their effectiveness,...

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