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Initial introduction and spread of the SARS-CoV-2 AY.4.2.1 Delta variant in Bulgaria, a genomic insight

Ivailo Alexiev1, Marta Giovanetti2,3, Eleonora Cella4

  • 1National Center of Infectious and Parasitic Diseases, Sofia, Bulgaria.

Journal of Medical Virology
|July 28, 2022
PubMed

Keywords:
SARS coronavirusepidemiologymutation/mutation rate

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