Just wondering if it is still possible and if so how?

Spreading it around (3% of users have this achievement.)

Spread your disease to 5 other user! 0/5

that is from the 2009 zombie event diseases were spread by biting other users instead of using a mask.

So, does that mean it is impossible for us to achieve it? It would seem that way...

I was literally just wondering about this.

Yeah, it's a retired achievement obtained by what mentioned, so it can't be obtained anymore. :)

There seems to be a few of those...

- Thanks! <3

Thanks everyone ^^