The World Health Organization’s chief scientist said Tuesday 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, reports AFP.
Swaminathan said there were 129 different candidate vaccines that have got as far as clinical trials — being tested on humans — while a further 194 are not yet that advanced in their development and are still being worked on in laboratories.
“This covers the entire range of technologies,” she told a live interaction on WHO social media channels.
“They’re still in development. I’m sure some of them will prove to be very safe and efficacious and others may not.
“There could be advantages to some of the second generation vaccines…clearly if you have an oral vaccine or an intra-nasal vaccine this is easier to deliver than an injectable.