Yes, pandemics are to be expected. The impact and magnitude of response necessary for this one is not predictable. The last one that came close was over 100 years ago.
Ebola was/is a big deal for the past 45 years off an on.
But never a pandemic (if Ebola retained it's deadliness and gained characteristics that allowed it to become a pandemic that would be, to put it mildly, very bad.)