GENEVA: The World Health Organization's (WHO) chief scientist said Tuesday she was looking forward to the "second generation" of Covid-19 vaccines, which could include nasal sprays and oral versions. There could be advantages to some of the second generation vaccines... clearly if you have an oral vaccine or an intranasal vaccine this is easier to deliver than an injectable," she said. Swaminathan explained the advantages of a vaccine being sprayed into the nose, as happens in some countries with influenza vaccines. The WHO has only given emergency use authorization to seven Covid-19 vaccines: those created by Pfizer/BioNTech, Moderna, AstraZeneca, Johnson & Johnson, Sinopharm, Sinovac and last week Bharat Biotech. Nobody has ever claimed that the vaccines are going to be 100 percent protective.

Source: Manila Times November 10, 2021 18:13 UTC