<div dir="ltr"><div dir="ltr"><br></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Fri, Jan 15, 2021 at 4:33 AM BillK via extropy-chat <<a href="mailto:extropy-chat@lists.extropy.org">extropy-chat@lists.extropy.org</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><br>
2) If COVID mutates rapidly (as seems to be happening) then there may<br>
need to be an annual vaccination, like the flu jab every winter.<br><br></blockquote><div>### This is highly unlikely, at least not for the reason you mention. The flu has a genetic structure that encourages gene swapping between different strains, thus often creating new and substantially different strains of the virus. Coronaviruses do not have that gene swapping mechanism and the Wuhan virus is only likely to slowly accumulate mutations, mostly point mutations, like other coronaviruses.</div><div><br></div><div>Rafal</div></div></div>