Meanwhile, the shape of the reported case versus date rate curve has not changed.
The quoted material is exceptionally intelligible.
There are studies sugggesting that the virus is significantly mutating at a rate visible even over the short term that we have been watching its genomics. The report that I have found informative suggests 100 changes in various proteins and, significantly, a half-dozen changes in the Spike ‘S-protein’. That of immunity and vaccine, analogous to influenza.
Today Highly Pathogenic Avian Influenza A(H7N3) is reported in a North Carolina commercial turkey flock.
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