Well, of course. Disease outbreaks happen all the time. Just from the top of my head I remember tropical fevers (like Zika and yellow fever), Ebola, Corona viruses (such as MERS and SARS), zoonotic flues outbreaks that threatened to become a pandemic. This happens every other year. Fauci said "thing that happens every 1-2 years likely to happen during a 4-8 year period".