If the virus hasn't been isolated, from what do laboratories make vaccines?

More information: https://www.orwell.city/2022/02/sequence.html

This is one of the questions asked to Dr. José Luis Gettor when he was interviewed by Mario Blitzman and Charly Salgado of La Bitácora.

Dr. Gettor briefly explained that COVID vaccines are made from a genomic sequence created through computer software. None of these vaccines are made from a virus that has been isolated.

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