DNA
Covid is only the first one. There are more. And each one is designed to do something to the remaining people on earth. Why do you think they want samples and they categorize your DNA? They have it all analyzed. They know who's here on the planet and what they need to do to your DNA to either change you or to kill you off.
So that's what they've been doing. Creating this “great healthcare system” and then now using it to kill you