With some emergencies, there is an urgency that has to be respected. In mere minutes entire populations of individuals can be sparred or lost depending upon the quick actions of a handful of people. That is why emergency operations centers are so important.
In the event of a public health emergency of some kind, the rapid response of those who have authority to respond to something like this is critical. The people need to see that there are adults in the room who have the situation under control. They need to know that there is an organized response ongoing to try to fix the situation that the world would be facing in those circumstances.
Having one centralized location that people can go to in order to provide the public with information and updates about what is going on is so very essential. The cost of such a structure is well worth the expense.