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The Ebola epidemic happened in 20-14. The first F-D-A approved VACCINE for Ebola was just released last December – five years later. The Zika virus spread across the world in 20-15. Today, there is STILL no vaccine for that deadly disease. Now – there’s COVID-19. And companies all over the world are racing to create a viable vaccine ... Something experts say could take up to eighteen months.

Even though the U-S has not yet reached its peak number of COVID-19 cases – experts are already wondering if this virus will return each year, like the flu. Because COVID-19 is an entirely NEW virus – no one has ever had it and therefore 100-percent of the world’s population is at risk of catching it. That makes the search for a vaccine even more pressing.

Over the years, Fortune has welcomed all kinds of leaders to the conference stage to talk about all kinds of global issues. In 20-17, Fortune hosted a Brainstorm Health event – right on the heels of the Ebola epidemic. Doctor Nahid Bhadelia (nah-HEED bah-DEEL-yuh) spoke at that conference. She’s an infectious disease physician from Boston University’s School of Medicine.

As the deadly COVID-19 virus spreads rapidly across the globe, the world is desperate for information and insight. Fortune is hoping to provide some of those insights through past interviews with leading health experts. Peter Sands is the executive director of the Global Fund - an organization created to fight three of our deadliest infectious diseases: malaria, tuberculosis and H-I-V – AIDS. These three diseases kill more than two-million people each year.

The COVID-19 crisis has shed light on some of the holes within America’s healthcare system - from the lack of sick pay, to the high cost of care. But even before this pandemic, the American system stirred plenty of debate. Doctor Freda Lewis-Hall is an executive vice president of Pfizer – one of the world’s biggest pharma companies.

In December 20-13, a two-year-old boy in West Africa died after becoming sick with a fever, vomiting and diarrhea. By January – that same sickness had killed three more members of his family. It wasn’t until March – three months later – that the mysterious disease was identified as Ebola. But by then – it had already spread. Over the next two years, Ebola would kill more than 11-thousand people and cost billions of dollars. Doctor Raj Panjabi was there.

Scientists and companies are racing to find a vaccine to fight back COVID-19. Unfortunately, scrambling for the right tools to fight a dangerous disease is not a NEW problem – it surfaces with each global outbreak. In 2-thousand-and-nine, the world was hit with H-one-N-one – better known as the swine flu. In one year, that virus killed more than 12-thousand people in the U-S.

Whether it’s social media, news stations or the neighbor next door – the flood of incoming information about the coronavirus is overwhelming. So Fortune thought it would provide some perspective from the world’s leading doctors and experts. Doctor Michael Osterholm is the Director of the University of Minnesota’s Center for Infectious Disease.

Outbreaks and pandemics have been happening since the beginning of time. From the Spanish Flu of 19-18 to the H-one-N-one swine flu in 2-thousand-and-nine. But now it’s 20-20 – and the world is suffering through another infectious disease crisis. So what lessons have we learned from past outbreaks? Fortune dug into its archives to find answers from those who have lived on the frontlines of these pandemics. Doctors like Nahid Bhadelia (nah-HEED bah-DEEL-yuh).