It has been 500 days since the first known US death from Covid-19. Variants and low vaccination rates threaten to prolong the pandemic - CNN
- It has been 500 days since the first known US death from Covid-19. Variants and low vaccination rates threaten to prolong the pandemic CNN
- Delta variant of COVID-19 detected in Indiana WTHR
- Delta variant infecting mounting number of people in rural Kansas and Missouri ABC News
- Covid: Why has the Delta variant spread so quickly in UK? BBC News
- The US marks a vaccine milestone, but one expert warns that the coronavirus Delta variant has a worrying impact on patients CNN
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