For infectious disease experts, the most terrifying aspect of their job is the unpredictability of emerging infectious diseases.
In the 34 years that have passed, the map evolved.
Fauci said in an interview that he still continues to show that same slide, but "I added one or two or three new emerging diseases every year."
The last two years have been especially busy. "Remember the measles outbreak in Disneyland, drug-resistant TB, MERS, etc. Chikungunya in the Caribbean. And now we're dealing with Zika," Fauci said. "It's now a constant battle with emerging and reemerging infectious diseases."
This is the map he showed at a hearing on Capitol Hill this week:
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