How did they predict Covid?

I was watching Travelers and got to the pandemic episode (205). I somehow never looked at how old was that series, so I failed to realise that this was released in 2017.

I know we've had other pandemics in the past, but this episode stroke really close to home.

It's only after finishing the whole series that I realised it ended in 2018. And now I'm wondering if that series was shot by Travelers who knew that Covid was going to be a thing in 2020-2021