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Looking Forward to ‘Second Generation’ of Covid-19 Vaccines: WHO Chief Scientist Swaminathan

The World Health Organization’s chief scientist mentioned Tuesday she was wanting ahead to the “second era” 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.

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 advised a reside interplay on WHO social media channels.

“They’re nonetheless in improvement. I’m positive some of them will show to be very secure and efficacious and others might not.

“There could possibly be benefits to some of the second era vaccines… clearly you probably have an oral vaccine or an intra-nasal vaccine that is simpler to ship than an injectable.

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“Ultimately we’ll find a way to select those which can be most acceptable.

“If not for Covid, we’re going to use these platforms for different infections sooner or later.”

Swaminathan explained the advantages of a vaccine being sprayed into the nose, as happens in some countries with influenza vaccines.

“If there’s a local immune response then it will take care of the virus before it even goes and establishes itself in the lungs and starts causing a problem,” she mentioned.

The WHO has solely given emergency use authorisation to seven Covid-19 vaccines: these created by Pfizer/BioNTech, Moderna, AstraZeneca, Johnson & Johnson, Sinopharm, Sinovac and final week Bharat Biotech.

“None of the vaccines are one hundred pc. Nobody has ever claimed that the vaccines are going to be one hundred pc protecting. But 90 p.c is an excellent quantity of safety to have, in contrast to zero,” Swaminathan said.

“Till now, with the vaccines that we have approved, there has not been any signal which has been so worrying that we need to say, well, we need to re-think this vaccine.”

More than 7.25 billion vaccine doses have been administered all over the world, in accordance to an AFP depend.

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