Airlines in a Crisis

Heard immunity and a reduction in inection was supposed to happen at 60% infection/vaccination. Now some countries are there but infection rates continue to rise.  New scenario; We need to be at 90% vaccination rate because the vaccines are at best 90% effective and with the latest virus version only 30% after first dose. And not at all in some that are immuno compromised. This could drag on. When 90% won't do it they will come with the 3'rd injection and what then. Will there be a 4'th and a 5'th and then annual boosters. This is the problem when there is no plan B as an alternative to vaccination. Or maybe vaccination was plan B and a plan C is just to much for politicians to think about.  At some stage we will have to live, or die, with the CoVid19 virus. It's a cold virus just like the 4 others that we have lived with for at least a hundred years. It's just we weren't that well informed when each of them first came around and killed left right and center