VIRUS!!!!!!!!!!!!!!!!!

[Super Buu]

I started doing that. I tried a few times with Virus and Bacteria, but Parasite seems to work the best if you're willing to be AFK for long periods of time. Without symptoms, it's pretty much invisible. I've just got all the transmission types for my new parasite, and am waiting to build up evolution points. I find it's better to get more than you need for when you upgrade symptom tiers, that way you can immediately sell any noticeable symptoms that you got 'free'. And there's no point upgrading as soon as you get the points anyway, since you won't be able to buy any of those next-tier symptoms until you have the requisite points.