On Fri, Mar 20, 2020 at 04:46:55PM -0400, Keith Moore wrote: > Don't stop at July 2020.?? Plan contingencies through at least EOY 2021.??? > Until there's global herd immunity of one kind or another, continued > restrictions on travel seem likely. Note that -- at the moment -- while it seems likely that those who have been infected with COVID-19 and survived it will develop some immunity to it, I'm unaware of any research that indicates *how long* such immunity might persist. So while long-term global herd immunity is indeed a possibility, it would probably be best to avoid assuming it will exist until there is ample evidence that it does exist. ---rsk
