Quote:
Originally Posted by Skybird
The Chinese say they have identified TWO strains of Covid-19 which means in plain English the virus already has mutated once. The more agressive one is the younger, new strain (L-strain), currently responsible for 70% of infection cases. The older one they call the S-strain.
This makes developing a vaccine more complicated, since you need at least TWO vaccines now, one for every strain.
It gets worse if the virus mutates further.
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IF antigenic drift accumulates far enough to make a difference. As it is now I dont think we're at the stage of requiring two vaccines for these S and L strains of the same virus