> Is it a nod to some comic book thing? Or a hint to future villain?

It could be a nod to some comic book thing, but I haven't read any so I can't really say. It could be a hint to a future villain, but this part is pure speculation for now.

However, this hints to a Superman's deed he did in BvS.

We see the similar news headline on the wall at Wallace Keefe's apartment, between 00:25:30 to 00:26:00, along with other headlines of Superman's deeds in BvS.

[![enter image description here][1]][1]

[![enter image description here][2]][2]

[Image Courtesy](https://www.the-fanboy-perspective.com/the-journey-of-superman.html)

On the right side, we can see a note saying,

>A manufactured supergerm that could end humanity was halted from release by the man they call Superman.

It's safe to assume that Superman prevented this virus thing from releasing in the past. 

However, **with him gone, there is a chance that someone is again trying to release that virus. And this headline can be a hint to this and an Easter egg.** In the beginning of *Justice League*, we are told that this is a desperate time where Superman is not alive, crimes are at peak and people are in trouble. We even see some crooks trying to steal from a shop in Justice League. So, that Supergerm headline could be one of those things that's happening because Superman is not there to stop.


  [1]: https://i.sstatic.net/qEEi9.jpg
  [2]: https://i.sstatic.net/nhIef.jpg