Broadly speaking: 1) Diseases are a growing issue, with increased human population and travel. 2) It's hard to predict which ones will become pandemics. It's

Broadly speaking: 1) Diseases are a growing issue, with increased human population and travel. 2) It's hard to predict which ones will become pandemics. It's kind of like asking whether a game of Russian Roulette is a big deal or just a story to get hits. You don't know until you pull the trigger.