GENEVA, Switzerland (AFP) — 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. Swaminathan said there were 129 different candidate vaccines that have got as far as clinical trials — being […]