Scrump, don't worry about these guys. It just goes to show you they're pissed off because they are possibly the dumbasses who ran right out and got their flu shots last yr and now they are just learning this,and it's scaring the crap outta them and they're pissed at you for exposing what they fear.
No worries, keep up the good work. Thanks for the news letter. Be good and keep up the good fight.