When "pandemics are declared" - what does this mean in practice?

Beware of any "freedom fighter" who supports the government's power to declare pandemics. They are they are fighting freedom and defending the tyranny.

Historically, epidemics could only be recognized AFTER the fact: after a substantial number of people became ill, died and after a significant economic impact. Examples of real epidemics include mostly water-born, crowding/poor sanitation and vermin-related diseases such as cholera, plague, typhus and smallpox. All of these diseases are eliminated by …