Data indicate that Delta is 40-60% more transmissible than Alpha and almost twice as transmissible as the original Wuhan strain of SARS-CoV-2. Furthermore, significantly more viral particles have been found in the airways of patients infected with the Delta variant. A Chinese study reported that viral loads in Delta infections were ~1,000 times higher than those in infections caused by other variants. In response this information, the World Health Organization (WHO) regards Delta as “the fastest and fittest” variant so far.
SHOULD WE FIRWST AGREE ON STRONGER DEFINITION?
https://asm.org/Articles/2021/July/H...iant-B-1-617-2




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