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The World Health Organization's chief scientist said she was looking forward to the "second generation" of COVID-19 vaccines, which could include nasal sprays and oral versions. Soumya Swaminathan said such vaccines could have advantages over the current crop as they would be easier to deliver than injections and could even be self-administered.
The World Health Organization's chief scientist said she was looking forward to the "second generation" of COVID-19 vaccines, which could include nasal sprays and oral versions. Soumya Swaminathan said such vaccines could have advantages over the current crop as they would be easier to deliver than injections and could even be self-administered.
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