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How the U.S. is failing to track COVID variants: The UK is beating America in fight to control mutant strains while U.S. officials don t even know which counties have cases due to federal rules that control what information labs can share
More than 2,100 cases of coronavirus variants have been reported across 45 states, including those from the UK, South Africa and Brazil, as well as homegrown mutant strains
Because the FDA has not approved tests needed for detecting variants as a diagnostic tool and due to federal rules about labs, public health officials often don t know what counties the variants have been identified in
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The novel coronavirus undergoes a mutation about once every 2 weeks, or half the rate seen in influenza.
What to Know
Mutations of the virus have given rise to thousands of variants, only a few of which currently appear as a major threat due to increased infectivity, lethality, or vaccine resistance.
In the US, the current major variant is the so-called “UK” variant (officially “B.1.1.7”), which is about 35-50% more infectious or transmissible, and can give rise to a rather more lethal form of COVID-19.
The doubling time of the “UK” variant in the US, where it is expected to become the dominant form of the virus by March 2021, is estimated to be 9.8 days.