Health
US tracks virus variants as cases top 25m – The West Australian
As states accelerate their vaccine distribution and more infectious strains come to light, the number of COVID-19 cases in the US has passed 25 million.
The US Centers for Disease Control and Prevention (CDC) is stepping up efforts to track coronavirus mutations and ensure vaccines and treatments remain effective against new variants.
The agency’s chief, Dr Rochelle Walensky, spoke about the rapidly evolving virus during a Fox News interview on Sunday as the number of Americans known to be infected surpassed 25 million, with more than 417,000 dead, little more than a year after the first US case was documented.
Walensky, who took over as CDC director…
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