So much effort, really around the world as we're on the air tonight trying to find the clues to stop this tidal wave of the Corona virus cases.

And because Covert 19 is a new viral illness, it knows no borders circulating around the globe.

Doctors on the front lines are scrambling to try to deal with it.

But there's another front line trying to find the viruses before they find us, and they're called virus hunters.

Bats are absolutely amazing creatures.

Bat saw special on.

There's a lot of interest right now in bats because of the viruses they carry.

Bats are unknown Reservoir for Corona viruses We don't know why they're able to live with so many viruses at such a high level.

They have a very interesting physiology.

We don't fully understand it.

It's possible bats could hold the key to understanding and maybe even conquering a Corona virus.

They're exposed to a virus.

They can stamp it right out.

How they carry these pathogens without coming down with them is fascinating.

The scientists don't know exactly where the new Corona virus came from.

The leading theory was that This was a virus that most likely originated in bats, then likely jumped to infect an animal and then appeared to jump to infect humans.

On the front line are the virus hunters.

These air the people that identify the source, determine the transmission and then work to stop the spread of the virus.

Forest hunters are scientists whose job it is to go out and find new viruses.

They will be working in very remote areas around the world, catching wildlife, sampling them, then testing the samples for new viruses.

They're people who are going to markets where live animals are sold there, going into caves where fats are flapping around places where wild animals are migrating.

What we try to do is try to hunt these glasses down in their natural reservoirs.

I am one of the creators and executive producers of a new Netflix series called Pandemic.

How to Prevent an Outbreak.

The message of the docuseries, which is we are vulnerable all the time to new viruses coming out.

Fortunately, there are people around the world working to try to protect us people like Dr Ghazi Collie.

He's a scientist who has traveled for years studying the link between diseases in humans and animals.

When human activity come close to the animal populations, then we are providing a chance for these voices to cross from the animal population to the human population.

Cove in 19 is not yet a pandemic.

But even before this current outbreak, these brave detectives were on the trail of such pathogens.

We have to follow the virus.

Where is the virus located?

In our documentary pandemic, you see Dennis Carroll.

My main responsibility is trying to prevent control emerging viral threats.

He's looking specifically at these avian types of strains strains that are harbored and birds because there's been a lot of fear that the next scary flu virus could come from births are big.

Main goal is to see what the prevalence of flu is in this area at this time with this population of ducts.

Deb Carter She's a field veterinarian and she gets groups of hunters together.

Does anyone need this stuff?

And they go out and capture the birds, testing to see what types of viruses might be migrating Virus hunters are currently traveling around the world, keeping an eye out for the next big disease.

We plotted the origin of every known emerging disease.

Hot spots are places in Southeast Asia, in Central and West Africa, in Latin America, and those are the places.

If we really want to find the next pandemic before it emerges, that's where we need to be working.

Their work is fascinating and daring all in one.

You know, you were saying in your piece that this went, we believe from a bat to an animal and then the humans we don't know the animal, but so many people are asking questions about animals.

David, from bats to that animal.

And they're asking us about pet.

But their pets here at home, exactly two known cases around the world so far of a pet with any sort of test for Corona virus.

And you don't even think the pet actually was infected with it might just have it on the no, that's correct.

These were two dogs that belonged to owners who were sick with Corona virus, and they could have just picked it up from just contact.

They were not showing any symptoms.

So the world of veterinary medicine watching pets very closely now and not just dogs but castles Of course, of course, in the bottom line tonight is there's no evidence that humans have passed it to pets or vice versa.

That's correct, but common sense.

If you know you're sick with Corona virus, you want to keep your distance from your pets just like you would from a purse.

That's right, they are kids, too.

Thanks, Jen.

Still ahead here on 2020 this special edition.

We're on the front lines tonight.

Americans stocking up on supplies, emptying out the stores.

You know, how much should you be preparing without creating panic in your community and your questions today?

They're still coming in about whether the virus is being spread through the air.

And if so, how far is a travel will answer that with the team here and tonight.

We're also now hearing from someone inside that nursing home in Washington State State where the death toll is rising, conditions worsening and what we're hearing from the inside tonight and what you should won't know if you have a relative in a nursing home.

Hi, everyone.

George Stephanopoulos here.

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