Delta Covid variant cases now confirmed in all 50 states
04:16
Cases of the delta Covid-19 variant have now been confirmed in all 50 states as the virus threatens to spread quickly in parts of the country where vaccination rates are low. NBC News’ Isa Gutierrez explains how the increase in cases could affect Covid-19 restrictions and how symptoms of the delta variant differ from those of the original strain. July 1, 2021
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