According to Soumya Swaminathan, the time has come to think about the 2nd generation
There are several advantages to 2nd generation vaccines. They can be through the mouth or sprayed on the nose. You do not need another person to vaccinate them. We can take it ourselves. We also have the opportunity to choose what is best for us.
The medical world will have the opportunity to use it in the future as an alternative to other vaccines besides the corona vaccine. In some countries, influenza vaccines are used as nasal sprays.
Spray
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