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Why Nasal Sprays Are Poised to Be the Next Weapon for Fighting Covid

Meissa Vaccines says its approach can dramatically reduce transmission.

Administering Meissa’s vaccine.

Administering Meissa’s vaccine.

Photographer: Cayce Clifford for Bloomberg Businessweek

Half a Greek alphabet and two years into the pandemic, the world is coming to terms with the notion that Covid-19 is here to stay. As new variants emerge, millions are still falling ill, increasing the risk of even harder-hitting strains. While coronavirus shots are among the greatest medical achievements of all time, reaching the market in less than a year and saving millions of lives, anyone who’s received three doses and still gotten infected will understand that the virus is a resilient opponent.

Marty Moore says he can beat it.