I think it would more likely have been a repeat of when SARS or any of the other epidemics came through in recent years.
They didn't come through though. Look at the SARS number by country. China and HongKong had 7400 of the 8000 cases. Taiwan and Singpore represented another 1000. The US had 75 cases. It was contained.
Ebola was contained too. The US had just 4 cases
In both cases, we took very few steps to contain it. Both could have been disasters, but we were spared. Neither was as contagious as CV.
Swine through came through but it was less lethal than the regular seasonal flu and didn't get reported on until it was almost over.