The director scientist World Health Organization said Tuesday that he was looking forward to the “second generation“of covid vaccines, which could include versions of nasal or oral administration.
Soumya Swaminathan indicated that these vaccines would present advantages over current ones, since they would be easier to administer than injections and even the patient himself could do it.
Swaminathan explained that there was 129 coronavirus vaccine candidates that were being tested in humans in clinical trials, and another 194 that were still being developed in laboratories.
This covers the entire spectrum of technologies, “he said in a live interaction on WHO’s social media.” They are still in development, some will prove very safe and effective, and others may not, “he added.
The scientist pointed out that “there may be advantages in some of the second generation vaccines.” “Clearly, if you have an oral or intranasal vaccine, it is much easier to administer than an injectable,” he explained.
What’s more, nasal spray type vaccines, used in some countries against influenza, can promote an earlier response to infection.
If there is a local immune response, it will take care of the virus before it becomes established in the lungs and starts causing problems, “he said.
So far, the WHO has licensed seven vaccines against covid: Pfizer / BioNTech, Moderna, AstraZeneca, Johnson & Johnson, Sinopharm, Sinovac and, last week, Bharat Biotech.
Neither vaccine is 100% (effective). Nobody ever said that vaccines were going to be 100% protective, “he said.
So far, with the vaccines that we have approved, there has been no sign that has been so concerning that we had to … rethink the vaccine, “he added.
According to the AFP balance, more than 7.25 billion doses of anticovid vaccines have been administered in the world.
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