We should all be concerned. I was watching Ken Burns, and it seems Washington ordered all his troops to be inoculated for Smallpox, and it made a huge difference in that war. Vaccines are good science, and the amount of testing we do to check safety is simply astonishing. We got extremely lucky with Covid-19, it was a warning shot, and we are taking away the wrong lessons from it. When bird flu comes with 50% mortality (half of the people you know will die, mostly children) we will go into complete lockdown with a required MRNA vaccine and we will thank God or Providence that we have people with the knowledge to make them.