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AY.4.2, A Delta Covid-19 Coronavirus Subvariant, Has Spread To 42 Countries

/ / Health Diagnostics / November 11, 2021

This AY.4.2 takes the Delta variant and raises it three additional mutations, including two that affect the important spike proteins that studs the surface of the virus. The big question, of course, is whether these mutations make the virus more transmissible and potentially more lethal as well.

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