The chief scientist at the WHO (World Health Organization) said on Tuesday (9) that she is eagerly awaiting the “second generation” of vaccines against Covid-19, which may include nasal or oral versions.
Soumya Swaminathan explained that these vaccines would have advantages over current ones, as they would be easier to administer than injections and even the patient could do so.
According to Swaminathan, there were 129 candidate vaccines against the coronavirus undergoing trials in humans in clinical trials, and another 194 still being developed in laboratories.
“This covers the entire spectrum of technologies,” she said in a live interaction on WHO social media. “They are still under development and some will prove to be very safe and effective and some will not,” he added.
The scientist highlighted that “there may be advantages in some of the second generation vaccines”. “Clearly, with an oral or intranasal vaccine, it’s much easier to administer than an injectable one,” he pointed out.
In addition, nasal spray vaccines, used in some countries against flu, can promote a faster response to infection. “If there’s a local immune response, it will take care of the virus before it takes hold in the lungs and starts causing problems,” he explained.
So far, WHO has authorized seven vaccines against Covid-19: Pfizer/BioNTech, Moderna, AstraZeneca, Johnson & Johnson, Sinopharm, Sinovac and, last week, Bharat Biotech.
According to the AFP balance sheet, more than 7.25 billion doses of anti-covid vaccines have been applied worldwide.
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